早期人类大约在何时开始制造石器和使用火？
When did early humans begin making stone tools and using fire?
目前已知最早的石器出自肯尼亚Lomekwi 3遗址（约330万年前，早于能人，属独立的Lomekwi工业）；经典的奥杜威（Oldowan）文化约在260万-170万年前出现于东非，通常与能人相关。更精致的阿舍利手斧约176万年前出现，常归因于直立人。用火的最早证据约在100万年前（南非Wonderwerk洞穴的烧焦骨和灰烬），而系统、普遍用火约在40万年前（欧洲多个遗址）。火提供了保暖、防护和烹饪，烹饪提高食物能量密度并缩短消化时间，被认为是驱动脑增大和社会化的关键因素。
The oldest known stone tools come from Lomekwi 3 in Kenya (about 3.3 million years old, predating Homo habilis, belonging to a distinct pre-Oldowan industry); the classic Oldowan industry appeared in East Africa about 2.6-1.7 million years ago and is usually linked to habilines. More refined Acheulean handaxes appeared around 1.76 million years ago, generally attributed to Homo erectus. The earliest evidence of fire use is about 1 million years old (burnt bones and ash at Wonderwerk Cave, South Africa), with systematic, habitual fire use around 400 thousand years ago (multiple European sites). Fire provided warmth, protection, and cooking; cooking raises the energy density of food and shortens digestion, and is considered a key driver of brain expansion and sociality.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Harmand 等(2015)《Nature》521: Lomekwi 3 石器;Berna 等(2012)《PNAS》109: Wonderwerk 遗址用火。
Harmand et al. (2015) Nature 521, 310-315 (Lomekwi 3 tools); Berna et al. (2012) PNAS 109(20), E1215-E1220 (Wonderwerk fire).
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1038/nature14464（复合著录按段核验：本标识只担保第1段；其余段未
#石器工具 #用火 #烹饪假说
古DNA研究揭示了现代人与尼安德特人、丹尼索瓦人之间的什么关系？
What do ancient DNA studies reveal about the relationship between modern humans, Neanderthals, and Denisovans?
2010年，Svante Pääbo团队发表尼安德特人基因组草图（获2022年诺贝尔生理学或医学奖），显示非洲以外的现代人基因组中含有约1-2%的尼安德特人DNA，证明走出非洲的现代人与尼安德特人发生过混血。丹尼索瓦人基因组（2010年从西伯利亚丹尼索瓦洞穴指骨中测出）显示其基因主要残留在东南亚和大洋洲人群（巴布亚新几内亚人群约含5%）。这些入侵的基因片段影响现代人的免疫系统（如HLA、TLR基因）和高原适应等表型。值得注意的是，尼安德特人的线粒体DNA和Y染色体几乎未在现代人中留下，提示混血主要发生在尼安德特男性与智人女性的方向（或此类谱系受选择淘汰）。
In 2010, Svante Pääbo's team published the Neanderthal genome draft (awarded the 2022 Nobel Prize in Physiology or Medicine), showing that non-African modern humans carry about 1-2% Neanderthal DNA, proof that modern humans leaving Africa interbred with Neanderthals. The Denisovan genome, sequenced in 2010 from a finger bone at Denisova Cave in Siberia, survives mainly in Southeast Asian and Oceanian populations (up to about 5% in Papua New Guineans). These introgressed segments affect modern immunity (e.g., HLA and TLR genes) and phenotypes such as high-altitude adaptation. Notably, Neanderthal mtDNA and Y chromosomes are essentially absent in modern humans, suggesting interbreeding was mainly between Neanderthal males and sapiens females, or that such lineages were selected against.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Science（2010年尼安德特人基因组）
Science, Green et al. (2010), Neanderthal genome
#古DNA #尼安德特人 #丹尼索瓦人 #基因渗入
生物学家怎么定义“物种”？加拉帕戈斯群岛的地雀为什么会演化成许多不同的种？
How do biologists define a "species," and why did Darwin's finches on the Galapagos Islands evolve into so many different species?
最常用的生物学物种概念认为，物种是能在自然条件下相互交配并产生可育后代的最大种群。地雀的分化典型地体现了异域物种形成：各岛屿之间被海水隔离，不同岛上的种群基因交流被切断，各自积累不同的突变，又因食物不同（种子、仙人掌、昆虫、吸血等）受到不同的选择压力。经过漫长隔离，它们的喙形、取食方式等差异越来越大，最终即使相遇也不能顺利杂交，形成生殖隔离，新的物种就此诞生。
The most common definition, the biological species concept, treats a species as the largest group whose members can interbreed and produce fertile offspring under natural conditions. The finches illustrate allopatric speciation: islands separated by ocean cut off gene flow between populations, so each island's birds accumulated different mutations and faced different selective pressures because food differed, from seeds and cactus to insects and even blood. Over long isolation, differences in beak shape and feeding grew until, even when they met, they could no longer interbreed smoothly, and reproductive isolation made new species.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通生物学》(陈阅增)
General Biology (Chen Yuezeng)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040583151（豆瓣书目条目: 陈阅增普通生物学）
#物种 #异域物种形成 #达尔文雀
什么是红皇后假说？
What is the Red Queen hypothesis?
红皇后假说认为，物种必须不断进化以应对竞争者、猎物和病原体的同步变化，才能维持相对地位。就像红皇后所说，必须不停奔跑才能留在原地。它常用于解释有性繁殖和军备竞赛式进化。
The Red Queen hypothesis says species must keep evolving just to maintain their relative standing against competitors, prey, and pathogens that are also changing. As the Red Queen put it, one must run constantly just to stay in place. It is often used to explain sexual reproduction and evolutionary arms races.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#红皇后假说 #协同进化 #竞争
分子钟是怎样估算物种分化时间的？
How does a molecular clock estimate when species diverged?
分子钟利用 DNA 或蛋白质序列以近似恒定的速率积累中性突变，通过比对两个类群的遗传差异来推算它们分开的年代。再用已知年代的化石校准速率，就能为缺乏化石记录的类群构建时间树。
A molecular clock uses the roughly constant rate at which neutral mutations accumulate in DNA or proteins; by comparing genetic differences between two groups, it estimates when they split. Calibrating the rate with fossils of known age lets researchers build timed trees even for groups lacking fossils.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#分子钟 #中性突变 #分化时间 #校准
多细胞生命是怎样起源的？
How did multicellular life arise?
单细胞祖先通过细胞黏附与分工、并保留遗传同一性，逐步聚成多细胞体；领鞭毛虫等现代近亲显示单细胞与多细胞间的过渡形态。King 等在 2015 年《自然》中报道了近多细胞动物的基因组特征。
Single-celled ancestors gradually formed multicellular bodies via adhesion and division of labor while keeping genetic identity; modern relatives like choanoflagellates show intermediate forms. King et al. reported near-animal genomic features in Nature (2015).
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
King 等《自然》2015；Campbell《生物学》
King et al., Nature (2015); Campbell, Biology
#多细胞起源 #细胞黏附 #领鞭毛虫
水杉、银杉、珙桐被称为“活化石”孑遗植物，它们为什么能在中国幸存下来？
Metasequoia, Cathaya and dove tree are “living fossil” relic plants—why did they survive in China?
这些古老类群在地球气候剧变中于多数地区灭绝，却因中国地形复杂、避难所多（如横断山、华中山地）而留存零星种群。水杉曾被认为已灭绝，1940年代才在湖北利川重新发现活植株。
These ancient lineages vanished elsewhere during climate upheavals but survived in scattered refugia thanks to China's complex terrain (Hengduan, central mountains). Metasequoia was thought extinct until living trees were found in Lichuan, Hubei in the 1940s.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Hu,《How Metasequoia, the "Living Fossil," Was Discovered in China》,Arnoldia,1998 (DOI: 10.5962/p.251370)
Hu, 'How Metasequoia, the "Living Fossil," Was Discovered in China', Arnoldia, 1998, DOI: 10.5962/p.251370
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.5962/p.251370; Arnoldia 58: 4-7
#孑遗植物 #水杉 #避难所
Hox 基因如何解释发育进化的保守性？
How do Hox genes explain the conservation of developmental evolution?
Hox 基因是沿身体前后轴按顺序表达的主调控基因，决定体节身份；其排列和功能的高度保守说明动物身体蓝图共享同一套古老调控模块，微小改变即可产生重大形态演化。
Hox genes are master regulators expressed in order along the anterior-posterior axis, specifying segment identity; their highly conserved arrangement indicates animals share an ancient body-plan toolkit, where small changes yield major morphological evolution.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Gilbert《Developmental Biology》,Sinauer Associates,2010
Gilbert S.F., Developmental Biology, Sinauer Associates, 2010
独立核验依据 · Independent verification: 核验依据 1 ISBN 9781605358246 (2013)
#Hox基因 #发育 #evo-devo
人类到底是从哪里来的？“人是猴子变的”这种说法科学吗？
Where did humans come from, and is it scientifically accurate to say “people evolved from monkeys”?
严格地说，人类不是由今天的猴子或猿演化来的，而是与现代黑猩猩在约600万至800万年前分道扬镳，共同拥有一个早已灭绝的祖先。人科的化石链条包括约400万年前能直立行走的南方古猿（著名的“露西”）、约200万年前的能人和直立人，以及晚近的智人；脑容量逐渐增大，工具和用火出现得越来越早。约30万年前出现的智人最终成为现代人类的直接祖先，这一过程由化石、分子钟和古 DNA 共同证实。
Strictly speaking, humans did not evolve from today's monkeys or apes; our lineage split from that of chimpanzees about six to eight million years ago, sharing a long-extinct common ancestor. The hominin fossil chain includes the bipedal Australopithecus of about four million years ago (the famous “Lucy”), Homo habilis and Homo erectus around two million years ago, and later Homo sapiens. Brain size grew and tools and fire appeared ever earlier; Homo sapiens, emerging about 300,000 years ago, became the direct ancestor of modern humans, a story confirmed by fossils, molecular clocks and ancient DNA.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通生物学》(陈阅增)
General Biology (Chen Yuezeng)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040583151（豆瓣书目条目: 陈阅增普通生物学）
#人类起源 #南方古猿 #智人
什么是演化发育生物学（Evo-Devo）？
What is evolutionary developmental biology (Evo-Devo)?
Evo-Devo研究基因如何调控胚胎发育，以及这些调控的微小改变如何在演化中产生身体结构的巨大差异。
Evo-Devo studies how genes control embryo development and how small changes in that control produce big evolutionary body-plan differences.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Jeffery，《洞穴鱼作为演化发育生物学模型系统》，《发育生物学》2001年
Jeffery, "Cavefish as a model system in evolutionary developmental biology," Developmental Biology (2001)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9781605358246 (2013)
#Evo-Devo #发育 #基因调控
"间断平衡"学说怎样解释化石记录中物种的"突然出现"？
How does punctuated equilibrium explain the "sudden appearances" of species in the fossil record?
间断平衡认为，物种在漫长的地质时间里形态相对稳定（停滞），随后在较短时期内发生快速成种与形态改变，而非以恒定的缓慢速度渐变。它强调成种事件本身而非个体变异的累积，是化石中常见"突然出现"现象的一种解释。
Punctuated equilibrium holds that species stay morphologically stable (stasis) for long spans, then undergo rapid speciation and change in relatively short bursts, rather than changing at a constant slow pace. It emphasizes speciation events over gradual individual change and helps explain the "sudden appearances" common in fossils.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Gould 与 Eldredge，《间断平衡：对种系渐变的替代》，《模型古生物学》1972年
Gould & Eldredge, "Punctuated equilibria: an alternative to phyletic gradualism" (1972)
#间断平衡 #成种作用 #化石记录 #演化速率
基因漂变是什么，它与自然选择有何不同？
What is genetic drift, and how does it differ from natural selection?
基因漂变是指小种群中因随机偶然事件导致某些基因频率波动，与性状是否“有利”无关。它常见于瓶颈效应和奠基者效应，与自然选择“择优”的机制完全不同。
Genetic drift is the random fluctuation of gene frequencies in small populations due to chance events, unrelated to whether a trait is “beneficial.” Seen in bottlenecks and founder effects, it differs entirely from selection's “survival of the fittest” mechanism.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
木村资生，《分子进化的中性理论》，剑桥大学出版社，1983。
M. Kimura, The Neutral Theory of Molecular Evolution, Cambridge University Press, 1983.
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL11261462W：The neutral theory of
#基因漂变 #瓶颈效应 #随机性
什么是间断平衡理论？
What is the theory of punctuated equilibrium?
间断平衡认为生物进化大多数时间处于稳定状态，物种长期少有变化。在相对短暂的地质时期内，环境剧变会触发快速的物种形成。它与渐进式进化的传统图景形成补充。
Punctuated equilibrium holds that species stay largely stable for most of their history with little change. Over geologically brief intervals, sudden environmental shifts can trigger rapid speciation. It complements rather than replaces the traditional picture of gradual change.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#间断平衡 #物种形成 #化石
什么是共同祖先？
What is a common ancestor?
共同祖先是多种生物在演化树上的“分叉点”——人、黑猩猩和猴子都可追溯到同一个远古灵长类祖先。
A common ancestor is the branching point on the tree of life; humans, chimps, and monkeys trace back to the same ancient primate ancestor.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#共同祖先 #演化树
中性学说对分子进化提出了什么观点？
What view does the neutral theory offer on molecular evolution?
木村资生提出的中性学说认为，分子水平上大部分突变是中性的，既不有利也不有害，其频率变化主要由随机遗传漂变决定，而非自然选择。它补充而非否定选择学说，解释了分子进化速率的相对恒定。
Motoo Kimura's neutral theory holds that most mutations at the molecular level are neutral, neither beneficial nor harmful, so their frequencies change mainly by random genetic drift rather than selection. It complements rather than rejects selection and explains the relatively constant rate of molecular evolution.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#中性学说 #遗传漂变 #分子进化 #木村资生
内共生学说如何解释线粒体和叶绿体的起源？
How does the endosymbiotic theory explain the origin of mitochondria and chloroplasts?
内共生学说认为，早期真核细胞吞噬了自由的细菌和蓝藻却未消化，而是与之形成互利共生，最终演化为线粒体和叶绿体。证据包括它们拥有自己的环状 DNA、双层膜和独立复制方式，与自由原核生物高度相似。
The endosymbiotic theory proposes that early eukaryotic cells engulfed free bacteria and cyanobacteria but did not digest them, forming a partnership that evolved into mitochondria and chloroplasts. Evidence includes their own circular DNA, double membranes, and independent replication, all reminiscent of free-living prokaryotes.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#内共生学说 #线粒体 #叶绿体 #起源
水平基因转移是什么，为什么重要？
What is horizontal gene transfer and why does it matter?
与亲子垂直传递不同，水平基因转移是生物间跨谱系直接交换 DNA，细菌常借此获得耐药或代谢基因，显著加速适应。Ochman 在 2000 年分析了它在细菌基因组演化中的份额，Campbell 的教材将其列为演化的重要机制。
Unlike vertical inheritance, horizontal gene transfer moves DNA directly between lineages; bacteria use it to acquire resistance or metabolic genes, speeding adaptation markedly. Ochman quantified its share in bacterial genomes in 2000; Campbell treats it as a major evolutionary mechanism.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Ochman 等,《Lateral gene transfer and the nature of bacterial innovation》,Nature,2000 (DOI: 10.1038/35012500)；Campbell《生物学》
Ochman et al., 'Lateral gene transfer and the nature of bacterial innovation', Nature, 2000, DOI: 10.1038/35012500; Campbell, Biology
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1038/35012500
#水平基因转移 #耐药 #细菌演化
什么是适应性辐射？
What is adaptive radiation?
适应性辐射指一个祖先类群在短期内分化出多种适应不同生态位后代的过程，常发生在新环境、新资源或大规模灭绝后的空窗期。达尔文雀和夏威夷蜜旋木雀都是经典例子。
Adaptive radiation is when a single ancestral group rapidly diversifies into many descendant forms adapted to different niches, often after new habitats, resources, or mass-extinction openings appear. Darwin's finches and Hawaiian honeycreepers are classic examples.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#适应性辐射 #生态位 #分化 #达尔文雀
什么是灭绝？
What is extinction?
当一个物种最后一个个体死亡、不再有后代，这个物种就从地球上消失，称为灭绝。
When the last individual of a species dies with no offspring, the species vanishes from Earth—that is extinction.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#灭绝 #物种 #消失
细菌为什么会产生抗药性？
Why do bacteria become drug-resistant?
使用抗生素会杀死敏感菌，少数天然耐药的细菌存活并繁殖，使耐药菌比例越来越高。
Antibiotics kill susceptible bacteria, leaving rare resistant ones to multiply, so resistant strains become more common.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#抗药性 #抗生素 #选择
趋同进化与同源结构有何不同？
How does convergent evolution differ from homologous structures?
趋同进化是亲缘远的物种因相似选择压力独立演化出相似功能结构（如蝙蝠翼与昆虫翅），而同源结构源自共同祖先，功能可不同但骨骼布局相似。
Convergent evolution produces similar functions in distantly related species under similar pressures (e.g. bat wings vs insect wings), whereas homologous structures derive from a common ancestor and share layout despite different functions.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》教材
Evolutionary Analysis
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#趋同进化 #同源 #适应
人类演化过程中脑容量发生了怎样的变化？
How has brain size changed over the course of human evolution?
南方古猿脑量约400-500ml，能人约600-700ml，直立人约900-1100ml，智人约1300-1500ml，在约200万年里几乎增长了三倍，增幅在直立人阶段尤为显著。脑增大伴随颅骨形态、前额和小脑变化，与工具制造、语言、复杂社会行为和烹饪带来的营养改善相关。值得注意的是，近一两万年来人类脑量略有减小，其原因（身体尺寸减小、颅形变化或神经布线优化）仍在讨论中。
Brain volume rose from about 400-500 ml in australopiths to about 600-700 ml in Homo habilis, about 900-1100 ml in Homo erectus, and about 1300-1500 ml in Homo sapiens, nearly tripling over about two million years, with a sharp increase in erectus. The expansion accompanied changes in skull shape, forehead, and cerebellum and is linked to tool making, language, complex social behavior, and better nutrition from cooking. Notably, brain size has slightly declined over the past 10,000-20,000 years; whether due to smaller bodies, skull shape, or neural-wiring optimization is still debated.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（古人类脑量研究）
Nature, hominin brain size evolution
#脑容量演化 #颅骨 #智人
为什么科学家说所有生物有共同祖先？
Why do scientists say all life shares a common ancestor?
不同生物共享几乎相同的遗传密码、相似的细胞结构和大量同源基因，这些共性用共同祖先最能解释。比较 DNA 与化石证据都能把现生生物回溯到早期生命树的少数分支，支持「万物同源」。
Different organisms share nearly the same genetic code, similar cell structures, and many homologous genes, best explained by common descent. Comparing DNA and fossils lets scientists trace living species back to the few branches of the early tree of life, supporting the idea that all life is related.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
The Origin of Species (Darwin)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#共同祖先 #同源 #遗传密码 #生命树
瓶颈效应对种群遗传多样性有何后果？
What are the consequences of a population bottleneck for genetic diversity?
种群数量骤减会使大量等位基因随机丢失，遗传多样性急剧下降，随后即使数量恢复也对少数等位基因依赖度高，易受近交和病害冲击。
A sudden population crash randomly loses many alleles, sharply reducing genetic diversity; even after numbers recover, the population remains dependent on few alleles and is vulnerable to inbreeding and disease.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》教材
Evolutionary Analysis
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#瓶颈效应 #遗传多样性 #近交
为什么细菌会产生抗药性？
Why do bacteria become drug-resistant?
细菌繁殖极快，少数个体天生携带能抵抗药物的变异。使用抗生素时，普通细菌被杀死，而耐药个体存活并大量繁殖，使抗药菌株逐渐占优势。这是自然选择在人类用药下的真实例证。
Bacteria reproduce extremely fast, and a few individuals are naturally born with mutations that resist drugs. When antibiotics are used, ordinary bacteria die but resistant ones survive and multiply, so resistant strains gradually dominate. This is natural selection playing out under human medicine.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#抗药性 #自然选择 #抗生素
有哪些证据支持所有生物拥有共同祖先？
What evidence supports that all life shares a common ancestor?
多方面的证据包括：几乎所有生物共用同一套遗传密码和 DNA/RNA 分子；不同物种在胚胎早期高度相似；以及同源器官（如蝙蝠翅膀与人手）反映共同蓝图。分子钟还显示物种分化时间与化石记录基本吻合。
Evidence includes the near-universal genetic code and DNA/RNA molecules shared by almost all life, the striking similarity of early embryos across species, and homologous structures (e.g., bat wings and human hands) reflecting a common blueprint. Molecular clocks also align divergence times with the fossil record.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《自然》（Nature）进化生物学综述；英国自然史博物馆（NHM）
Nature evolution biology reviews; Natural History Museum, London
#共同祖先 #同源 #遗传密码
支持内共生学说的关键证据有哪些？
What key evidence supports the endosymbiotic theory?
线粒体与叶绿体拥有双层膜、自身环状 DNA、以二分裂增殖、核糖体类似细菌，且其基因序列与特定细菌类群相近，强烈支持它们源自被吞入的细菌。
Mitochondria and chloroplasts have double membranes, their own circular DNA, divide by binary fission, bear bacteria-like ribosomes, and their gene sequences cluster with specific bacteria—strongly supporting a bacterial origin.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Martin WF, Garg S, Zimorski V. Endosymbiotic theories for eukaryote origin. Philosophical Transactions of the Royal Society B (2015) 370:20140330
Martin WF, Garg S, Zimorski V. Endosymbiotic theories for eukaryote origin. Philosophical Transactions of the Royal Society B (2015) 370:20140330
独立核验依据 · Independent verification: 核验依据 1 DOI 10.1098/rstb.2014.0330
#内共生 #证据 #细胞器起源
人类和黑猩猩有多近？
How closely related are humans and chimpanzees?
人类与黑猩猩的DNA序列相似度超过98%，是最亲近的现存亲戚。两者在大约600万到700万年前走向不同的进化分支。这一亲缘关系体现在许多解剖和基因特征上。
Humans and chimpanzees share more than 98 percent of their DNA and are our closest living relatives. The two lineages split into separate evolutionary branches roughly six to seven million years ago. This kinship shows in many anatomical and genetic features.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#人类 #黑猩猩 #亲缘
长颈鹿的长脖子到底是“用进废退”的结果，还是自然选择的结果？
Is the giraffe's long neck a result of “use and disuse” (Lamarck) or of natural selection (Darwin)?
拉马克认为长颈鹿不断伸长脖子导致后代天生脖子更长，这是“用进废退”的获得性遗传，现代遗传学已否定了这种机制。达尔文的解释是：长颈鹿群体中脖子长度本来就有差异，脖子较长的个体能吃到更高处的树叶，生存和繁殖的机会更大，于是长脖子的基因在世代中被保留并扩散。关键在于变异先于选择而存在，而不是身体用久了才变长。
Lamarck proposed that giraffes stretched their necks until offspring inherited the gain, a “use and disuse” mechanism with inheritance of acquired traits that modern genetics rejects. Darwin's explanation is that neck length already varied within the group: individuals with longer necks reached higher leaves, survived and reproduced better, so long-neck genes spread across generations. The key point is that variation exists before selection acts; necks do not grow because of stretching.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通生物学》(陈阅增)
General Biology (Chen Yuezeng)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040583151（豆瓣书目条目: 陈阅增普通生物学）
#自然选择 #拉马克 #达尔文
什么是物种？
What is a species?
通常把能自然交配并产出可育后代的一群生物归为同一物种，例如所有家犬属于同一物种。
A species is generally a group that can naturally interbreed and produce fertile offspring, like all domestic dogs.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#物种 #生殖隔离 #定义
走出非洲假说的基本内容是什么？
What does the "Out of Africa" hypothesis state?
走出非洲假说认为，现代人（智人）约30万-20万年前起源于非洲，随后在约6万-7万年前（部分考古证据支持更早到10万年前）经中东迁出非洲，向欧亚大陆、东南亚、澳洲和美洲扩散，在途中基本取代了当地的古人类（尼安德特人、丹尼索瓦人等），并与他们发生有限的基因交流。支持证据包括：现代人线粒体DNA和Y染色体多样性以非洲最高、非洲以外人群多样性是非洲的亚样本，以及非洲以外所有现代人共享一个较近的共同祖先。
The "Out of Africa" hypothesis holds that modern humans (Homo sapiens) originated in Africa about 300-200 thousand years ago, then migrated out of Africa via the Middle East around 60-70 thousand years ago (some archaeological evidence suggests as early as about 100 thousand years ago), spreading across Eurasia, Southeast Asia, Australia, and the Americas, largely replacing local archaic humans (Neanderthals, Denisovans) while exchanging limited genes with them. Supporting evidence includes the highest mtDNA and Y-chromosome diversity in African populations, lower diversity outside Africa consistent with a serial founder effect, and a relatively recent common ancestor shared by all non-Africans.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Science（走出非洲与分子人类学研究）
Science, Out of Africa and molecular anthropology
#走出非洲 #智人迁徙 #线粒体DNA
初生演替和次生演替的关键区别是什么？
What is the key difference between primary and secondary succession?
初生演替发生在无土壤的全新基质上（如裸岩、火山灰），从地衣苔藓开始；次生演替发生在原有土壤保留的扰动地（如火灾后森林），恢复更快。
Primary succession starts on bare substrate with no soil (e.g. rock, lava) beginning with lichens, while secondary succession follows disturbance where soil remains (e.g. after fire) and recovers faster.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Odum & Barrett,《Fundamentals of Ecology》第5版,Brooks/Cole,2004
E. P. Odum and G. W. Barrett, Fundamentals of Ecology, 5th ed., Brooks/Cole, 2004
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL3334843W：Fundamentals of ecology
#演替 #群落 #生态
孔雀的长尾巴是怎么演化出来的？
Why did the peacock's long tail evolve (sexual selection)?
雌性偏好更华丽的尾屏，使雄性夸张特征在求偶中占优，即便代价是行动不便，这叫性选择。达尔文在 1871 年《人类的由来》中提出，Fisher 在 1930 年用“ runaway ”模型解释了偏好的自我强化。
Females prefer showier trains, so males with extravagant tails win mates despite the survival cost—sexual selection. Darwin proposed this in 'The Descent of Man' (1871); Fisher explained the self-reinforcing preference with his runaway model in 1930.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
达尔文 1871 年《人类的由来》；Fisher 1930 年《自然选择的遗传理论》
Darwin, The Descent of Man (1871); Fisher, The Genetical Theory of Natural Selection (1930)
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.5962/bhl.title.27468：The genetical theory
#性选择 #孔雀 #雌性选择
化石记录为进化提供了什么证据？
What evidence does the fossil record provide for evolution?
化石按地层年代有序分布，显示出生物形态随时间逐渐变化的序列，并保留了许多过渡类型（如始祖鸟兼具爬行与鸟类特征）。它直观地证明物种并非一成不变，而是随地质时间演替。
Fossils are distributed in ordered rock layers, revealing sequences in which forms change gradually over time and preserving many transitional types, such as Archaeopteryx with both reptilian and avian features. They directly show species are not fixed but succeed one another across geologic time.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#化石记录 #过渡化石 #地层 #进化证据
新物种是怎样形成的？
How do new species form?
物种形成通常始于种群间的生殖隔离：地理隔离让两个群体独立积累差异，当差异大到即使相遇也无法交配或产生可育后代，便成为不同物种。隔离机制可源于地理、行为、时间或染色体等多重因素。
Speciation usually begins with reproductive isolation between populations: geographic separation lets two groups accumulate differences independently, and once they can no longer mate or produce fertile offspring even if they meet, they are separate species. Isolation can arise from geographic, behavioral, temporal, or chromosomal factors.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
Evolution (Futuyma)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#物种形成 #生殖隔离 #地理隔离 #种群
"异域成种"和"同域成种"有什么不同？
What is the difference between allopatric and sympatric speciation?
异域成种发生在种群被山脉、海洋等地理屏障分隔后各自独立演化、积累生殖隔离；同域成种则在没有地理隔离的同一区域内（如生态位分化、染色体变异）产生新种。二者最终都导向生殖隔离。
Allopatric speciation occurs when a geographic barrier such as a mountain or ocean splits a population so the parts evolve apart and accumulate reproductive isolation; sympatric speciation produces new species within the same area without a barrier, often via ecological niche divergence or chromosomal change. Both ultimately yield reproductive isolation.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Coyne 与 Orr，《成种作用》（Sinauer Associates，2004）
Coyne & Orr, Speciation (Sinauer Associates, 2004)
#成种作用 #异域成种 #同域成种 #生殖隔离
化石是怎么形成的？为什么化石能证明生物在逐渐演化？
How do fossils form, and why can they prove that life has gradually evolved?
生物死后被泥沙迅速掩埋、与空气隔绝，骨骼或贝壳等硬组织在漫长岁月中被地下水中的矿物慢慢替换，最终形成化石；完全无氧的条件甚至能保存软体组织。把不同地质年代的地层化石按时间排开，就能看到生物的形态从简单到复杂、从过渡类型到特化类型的变化链条，例如马在五千万年里从狐狸大小的多趾祖先演化为单趾高大体型的完整序列。
After an organism dies, rapid burial in sediment protects it from air; over time minerals in groundwater slowly replace its bones or shells, and oxygen-free conditions can even preserve soft tissue. When fossils from different geological periods are arranged in time order, they reveal a chain of change from simple to complex forms and from transitional to specialized ones, for example the horse's fifty-million-year series from a fox-sized, many-toed ancestor to the single-hoofed animal we know.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
吴相钰 等 编,《陈阅增普通生物学》第4版,高等教育出版社,2014
Wu Xiangyu et al., Chen Yuezeng General Biology, 4th ed., Higher Education Press, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040396317（豆瓣书目条目: 陈阅增普通生物学）
#化石 #地层 #演化序列
什么是性选择？
What is sexual selection?
性选择是自然选择的一种特殊形式，指个体因更易获得配偶而留下更多后代。雄孔雀的长尾、鹿的角都是性选择塑造的特征。它有时会产生对生存不利却利于求偶的性状。
Sexual selection is a special form of natural selection where individuals leave more offspring by being better at getting mates. The peacock's long tail and a deer's antlers are traits shaped by it. It can produce features that hurt survival but help mating.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#性选择 #配偶 #求偶
为什么鸟、蝙蝠和昆虫都长出了翅膀，但它们并非近亲？
Why do birds, bats, and insects all have wings even though they are not close relatives?
这种现象叫趋同演化：亲缘关系很远的类群在相似的飞行选择压力下，各自独立演化出相似功能的结构。三者的翅膀起源自完全不同的身体部位，说明"同样的功能"未必来自"共同的祖先"。
This is convergent evolution, where distantly related lineages independently evolve similar structures under similar selective pressures such as flight. The three wings arose from completely different body parts, showing that a shared function does not imply a shared ancestor.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Futuyma，《演化》（第4版，Sinauer Associates，2017）
Futuyma, Evolution (4th ed., Sinauer Associates, 2017)
#趋同演化 #翅膀 #自然选择 #飞行
人类演化的主要谱系顺序大致是怎样的？
What is the approximate sequence of the main lineages in human evolution?
人类演化主线为：南方古猿（约420万-200万年前，如露西Australopithecus afarensis）已能两足直立行走但脑量小；能人（Homo habilis，约230万年前）脑量增大并制造最早的奥杜威石器；直立人（Homo erectus，约180万年前）脑量约900-1100ml，率先走出非洲、使用火；智人（Homo sapiens，约30万-20万年前在非洲出现）是现代人类。尼安德特人、丹尼索瓦人等其他人种已灭绝，但部分基因仍留在现代人基因组中。
The main human lineage runs: australopiths (about 4.2-2 million years ago; e.g., Lucy, Australopithecus afarensis) walked bipedally but had small brains; Homo habilis (about 2.3 million years ago) had larger brains and made the earliest Oldowan stone tools; Homo erectus (about 1.8 million years ago, brain about 900-1100 ml) was the first to leave Africa and used fire; and Homo sapiens (appearing in Africa about 300-200 thousand years ago) are modern humans. Other human species such as Neanderthals and Denisovans are extinct, yet some of their DNA persists in modern genomes.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#人类演化 #南方古猿 #直立人 #智人
奠基者效应如何导致小群体出现罕见性状？
How does the founder effect lead to rare traits in small populations?
少数个体从大群体分离建立新群体时，其携带的等位基因只是原群体的随机子集，可能使原本罕见的等位基因在新群体中变得常见。
When a few individuals found a new population, their alleles are a random subset of the source, so previously rare alleles can become common in the founder population by chance.
难度 进阶 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#奠基者效应 #遗传漂变 #群体
我们怎么知道鲸的祖先曾经是生活在陆地上的动物？
How do we know that whales evolved from land-dwelling animals?
证据来自化石和身体结构。古生物学家找到了巴基鲸、走鲸等化石，它们生活在五千多万年前，有可以行走的四肢，却已有鲸类的头骨和耳朵特征。现代鲸类身上还保留着不参与行走的后肢残余骨、没有功能的毛囊，以及和陆地哺乳动物相似的肺呼吸和哺乳行为。分子证据进一步显示，鲸和河马拥有最近的共同祖先。
The evidence comes from fossils and body structure. Paleontologists found fossils such as Pakicetus and Ambulocetus, animals from over 50 million years ago that had walking legs yet already showed whale-like skulls and ears. Living whales still carry useless hind-limb remnants, non-functional hair follicles, and mammal-style lung breathing and nursing. Molecular evidence further shows that whales' closest living relatives are hippos.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#鲸 #化石 #过渡类型
为什么刚打农药时昆虫几乎全灭，几年后却出现大批不怕农药的“超级害虫”？
Why does an insecticide kill almost every insect at first, yet years later large numbers of resistant "super pests" appear?
抗药性不是农药“逼”出来的新性状，而是选择放大了本来就存在的变异：在任何种群中，极少数个体恰好携带抗性突变。第一次喷洒时这些个体侥幸存活并繁殖，后代里抗性个体比例一代比一代高。用药越频繁、剂量越不足，筛选压力越大，抗药种群出现得越快。这正是自然选择在人造环境中的实时演示。
Resistance is not a new trait the pesticide forces into being; it is natural selection amplifying variation that was already there. In any population a tiny number of individuals happen to carry resistance mutations. When spraying kills the rest, those survivors reproduce, so resistant individuals make up a bigger share with every generation. The more often and incompletely the pesticide is used, the faster the resistant population appears, natural selection demonstrated in real time.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#抗药性 #自然选择 #种群
人工选择和自然选择有什么不同？
How does artificial selection differ from natural selection?
人工选择是人类按自身喜好挑选并繁殖具有特定性状的个体，从而在作物和家畜中快速塑造出多样品种。它和自然选择机制相同，但「筛选者」是人而非自然环境，目标常偏离生存适应。
Artificial selection is when humans choose and breed individuals with desired traits, rapidly shaping diverse varieties of crops and livestock. The mechanism mirrors natural selection, but the selector is human rather than the environment, and the goal often diverges from survival fitness.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
The Origin of Species (Darwin)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#人工选择 #选育 #品种 #自然选择
始祖鸟化石为什么被认为是从恐龙到鸟类的关键过渡证据？
Why is the Archaeopteryx fossil considered key evidence linking dinosaurs to birds?
始祖鸟兼具恐龙特征（牙齿、长尾骨、指爪）与鸟类特征（羽毛、翅膀、叉骨），是爬行类向鸟类演化的中间环节。它与后来大量带羽毛恐龙化石一起，支持鸟类由兽脚类恐龙演化而来。
Archaeopteryx shows a mix of dinosaur traits (teeth, a long bony tail, clawed fingers) and bird traits (feathers, wings, a furcula), making it an intermediate between reptiles and birds. Together with later feathered-dinosaur fossils, it supports the origin of birds from theropod dinosaurs.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Padian 与 Chiappe，《鸟类的起源与早期演化》，《生物学评论》1998年
Padian & Chiappe, "The origin and early evolution of birds," Biological Reviews (1998)
#过渡化石 #始祖鸟 #鸟类起源 #兽脚类恐龙
为什么现在常把生物分为三域？
Why are living things now often divided into three domains?
基于RNA等分子证据，科学家把生命分为细菌域、古菌域和真核域。古菌虽像细菌，却在遗传和生化上更接近真核生物。三域系统比旧的五界系统更能反映深层亲缘。
Based on molecular evidence such as RNA, scientists divide life into Bacteria, Archaea, and Eukarya. Archaea look like bacteria but are genetically and biochemically closer to eukaryotes. The three-domain system reflects deep relationships better than the old five-kingdom scheme.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#三域 #古菌 #分类
趋同进化是什么，能举些例子吗？
What is convergent evolution, with examples?
亲缘很远的类群在相似选择压力下独立演化出相似结构，称为趋同进化，如鱼类的鲨、海洋哺乳的鲸与爬行动物的鱼龙都各自演化出流线型身体。Campbell 的《生物学》以这类案例说明形态可由功能而非祖先决定。
Distantly related lineages independently evolve similar structures under similar selection—convergent evolution—as when sharks, whales and ichthyosaurs each evolved a streamlined body. Campbell's 'Biology' uses such cases to show form can be set by function, not ancestry.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Campbell《生物学》；Dawkins《盲眼钟表匠》
Campbell, Biology; Dawkins, The Blind Watchmaker
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL1966501W：The Blind Watchmaker（首版
#趋同进化 #流线型 #选择压力
谁是达尔文？
Who was Charles Darwin?
达尔文是19世纪的英国博物学家，提出了以自然选择为核心的进化论。他在环球航行中观察了大量动植物，写成《物种起源》一书。他的理论彻底改变了人们对生命多样性的理解。
Charles Darwin was a 19th-century British naturalist who proposed the theory of evolution by natural selection. During a voyage around the world he observed vast numbers of plants and animals and wrote On the Origin of Species. His theory transformed how people understand life's diversity.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#达尔文 #自然选择 #物种起源
基因流对种群分化有什么影响？
How does gene flow affect population differentiation?
个体或配子迁移带来的基因交流会降低种群间的遗传差异、抵消分化，使相邻种群保持相似；隔离减少基因流则会促进新物种形成。
Migration of individuals or gametes introduces gene exchange that reduces genetic differences between populations and counters divergence, keeping neighboring groups similar; reduced gene flow promotes speciation.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#基因流 #种群 #分化
恐龙灭绝后，谁成了地球的主角？
After the dinosaurs died out, who became the main animals on Earth?
约6600万年前恐龙灭绝后，哺乳动物得以繁盛，后来人类才慢慢出现。
After dinosaurs died out about 66 million years ago, mammals flourished and, much later, humans appeared.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
《十万个为什么》第六版生物分册,少年儿童出版社,2013
Ten Thousand Whys: Biology volume, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#恐龙 #灭绝 #哺乳动物
「进化」这个词在生物里是什么意思？
What does evolution mean for living things?
进化是说生物会随着时间慢慢改变，让后代和祖先不太一样，更好地适应周围的世界。比如长脖子的长颈鹿是因为祖先里脖子长一点的更容易吃到高处的叶子，一代代传下来就成了今天的样子。
Evolution means living things change slowly over time so that descendants differ from their ancestors and fit their world better. Giraffes, for example, got long necks because ancestors with slightly longer necks reached more leaves and passed that trait down through generations.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《进化生物学》
The Origin of Species (Darwin)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787040366723（豆瓣书目条目: 进化生物学-第3版）
#进化 #改变 #适应 #后代
达尔文提出的“自然选择”是怎样驱动进化的？
How does Darwin's "natural selection" drive evolution?
自然选择指同一物种中更具生存和繁殖优势的个体（因有利变异）留下更多后代，使有利特征在种群中逐渐增多。它在 1859 年《物种起源》中被提出，是进化的核心机制。
Natural selection means individuals with advantageous variations survive and reproduce more successfully, so beneficial traits accumulate in the population over generations. Proposed in "On the Origin of Species" (1859), it is the central mechanism of evolution.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
达尔文 1859 年《论借助自然选择（即生存斗争）的物种起源》（On the Origin of Species）；英国自然史博物馆（NHM）达尔文与进化藏品档案
Charles Darwin (1859), 'On the Origin of Species by Means of Natural Selection'; Natural History Museum, London, Darwin and evolution collections
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.5962/bhl.title.24329：The origin of the sp
#自然选择 #进化 #适应性
生物是如何分类的？
How are living things classified?
科学家按亲缘关系把生物归入界、门、纲、目、科、属、种等层级。种是最基本的单位，指能互相繁殖的自然群体。现代分类还借助DNA来修正亲缘关系。
Scientists group organisms into ranks like kingdom, phylum, class, order, family, genus, and species by relatedness. Species is the basic unit, meaning a natural group that can interbreed. Modern classification also uses DNA to refine these relationships.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#分类 #物种 #界门纲目
同源器官和同功器官的区别是什么？
What is the difference between homologous and analogous organs?
同源器官来自共同祖先、结构相似但功能可不同（如人臂与鲸鳍），同功器官功能相似却独立演化、结构来源不同（如鸟翼与蜜蜂翅）。
Homologous organs share a common ancestor with similar structure but possibly different function (human arm vs whale flipper), while analogous organs perform similar functions but evolved independently with different origins (bird wing vs bee wing).
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#同源 #同功 #比较解剖
什么是进化？
What is evolution?
进化是物种随时间逐渐改变、并可能产生新物种的过程。它主要通过自然选择等机制，让更适应环境的特征在后代中变得更常见。地球上的所有生物都可以追溯到共同的祖先。
Evolution is the gradual change of species over time, which can give rise to new species. Mainly through mechanisms like natural selection, traits that help survival become more common in later generations. All living things on Earth can trace back to common ancestors.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Richard Dawkins,《The Selfish Gene》Oxford,1976;中译《自私的基因》中信出版社,2012
R. Dawkins, The Selfish Gene, Oxford University Press, 1976; Chinese ed. CITIC, 2012
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL1966488W：The Selfish Gene（按标题+作者
#进化 #物种 #自然选择