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Genetic Drift

Genetic drift over time

Genetic drift over time

Ten simulations of random genetic drift of a single given allele with an initial frequency distribution 0.5 measured over the course of 50 generations, repeated in three reproductively synchronous populations of different sizes. In these simulations, alleles drift to loss or fixation (frequency of 0.0 or 1.0) only in the smallest population.Effect of population size on genetic drift: Ten simulations each of random change in the frequency distribution of a single hypothetical allele over 50 generations for different sized populations; first population size n=20, second population n=200, and third population n=2000.

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    "Random genetic drift chart."
    http://en.wikipedia.org/wiki/Genetic_drift%23mediaviewer/File:Random_genetic_drift_chart.png Wikimedia CC BY-SA 3.0.

Related Terms

  • founder effect
  • genetic drift
  • random sampling
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