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如何计算Genetic Drift

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Genetic drift is random change in allele frequencies due to chance — particularly influential in small populations where sampling error is large relative to gene pool size.

分步指南

  1. 1Variance per generation: p(1-p)/(2N)
  2. 2Small N → large fluctuations → faster drift to fixation or loss

例题解析

输入
p=0.5 · N=50
结果
σ per generation = ±5%
Small population drifts fast

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