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ANT101 – Lecture 5
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I.Variation in a Population

a.Produced by Mutation

i.Least common source of variation, but the only way you can get new traits

b.Mixed, Distributed by Recombination & Sexual Reproduction

i.This is how you get different combinations

c.Redistribution by Gene Flow, Genetic Drift (p. 62-63)*


II.Natural Selection

a.Reproductive Fitness

i.Genetic differences result in higher reproductive fitness in some individuals due to differential reproduction and sexual selection

ii.Variation is ALREADY in a population, it doesn’t arise when it’s needed (contrary to Lamarck)*


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