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What affects the likelihood that an allele will reach fixation in a population that has undergone a bottleneck?

User Pschang
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the large population becomes smaller. also, bottleneck is when a large population quickly shrinks. the effects of genetic drift becomes much stronger. e.g: seals alleles can be lost during bottleneck and the number of alleles left can shift dramatically in just a few generations.
User John R Doner
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