保护遗传学如何评估种群的近交衰退风险？
How does conservation genetics assess inbreeding depression risk?
通过杂合度、近交系数和有效种群大小来评估；近交会让有害的隐性等位基因暴露，降低幼体存活率。
Heterozygosity, inbreeding coefficient, and effective population size reveal how inbreeding exposes deleterious recessives and lowers survival.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Lewin's Genes XII,Jones & Bartlett Learning,2018
Lewin's Genes XII, Jones & Bartlett Learning, 2018
#近交衰退 #遗传多样性
迁徙廊道的设计为什么要考虑基因流？
Why should wildlife corridor design consider gene flow?
连通的廊道让隔离的种群交换个体与基因，避免近交并提升整体适应潜力，是保护遗传多样性的关键。
Connected corridors let isolated populations exchange genes, avoiding inbreeding and boosting adaptive potential.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Lewin's Genes XII,Jones & Bartlett Learning,2018
Lewin's Genes XII, Jones & Bartlett Learning, 2018
#迁徙廊道 #基因流
什么是遗传瓶颈，它对濒危物种意味着什么？
What is a genetic bottleneck and what does it mean for endangered species?
种群骤减会使基因多样性大幅丢失，之后即使数量回升也缺乏变异，难以适应环境变化。
A sharp population crash loses diversity; even recovery leaves low variation, hampering adaptation.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Lewin's Genes XII,Jones & Bartlett Learning,2018
Lewin's Genes XII, Jones & Bartlett Learning, 2018
#遗传瓶颈 #濒危物种
为什么要保护物种的遗传多样性？
Why protect the genetic diversity of species?
遗传多样性越高，种群越能适应环境变化、抵抗疾病和避免近交，是物种长期存活的保险。
Higher genetic diversity lets populations adapt to change, resist disease, and avoid inbreeding, an insurance for long-term survival.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Lewin's Genes XII,Jones & Bartlett Learning,2018
Lewin's Genes XII, Jones & Bartlett Learning, 2018
#遗传多样性 #物种保护