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Population subdivision (coalescent process with migration (individual gene…
Population subdivision
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The Wahlund effect
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delta always positive, subpopulation results in reduction in heterozygosity (always smaller than expected value).
Fst
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selfing species higher fst values, limited by gene flow
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Fst and migration
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under the infinite sites model, the expected number of pairwise differences single population is theta (4Nu)
expected number of differences between a pair of sequences sampled form different populations is theta*(1/2M +2)
for the case of island model, 1/(1+4Nm)
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