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Unformatted text preview: 0.5, then at the end, when all populations have lost their variation, 50% of the populations will be fixed for the A allele and 50% will be fixed for the a allele (latter = "loss" for the A allele, get it?). If the initial frequency was p = 0.7, then 70% of the populations would be fixed for the A allele (again, assuming no selection, migration, mutation). Main Points: 1) total variation does not change; variation goes from within populations (no variation between populations) to between populations (no variation within populations). 2) genetic divergence of populations entirely by chance! (no selection). This is why genetic drift can be an important force in evolution....
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This note was uploaded on 11/05/2011 for the course BIOLOGY MCB2010 taught by Professor Jessicadigirolamo during the Fall '10 term at Broward College.
- Fall '10