ANT101 – Lecture 5

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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