Biology 1001A Lecture Notes - Lecture 13: Frequency-Dependent Selection, Heterozygote Advantage, Assortative Mating
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Note: term test #2= cumulative (focus on 3-6, review 1 & 2) How will alleles frequencies change if wrr = wss > wrs: heterozygote disadvantage, matters what your starting alleles frequencies are, whichever alleles has higher starting frequency will continue to increase. How will alleles frequencies change if wrr = wss < wrs: both r and s will approach equilibrium frequency of 0. 5 both homozygous genotypes are equally un t. What if mating is not random with respect to genotype: assortative vs. disassortative mating, inbreeding vs. inbreeding avoidance, males that are genetically dissimilar than them are more attractive than those that have similar phenotype, most humans avoid inbreeding. Non-random mating and evolution: if population begins mating assortatively for certain trait, and all. Tuesday, november 3, 2015 genotypes have same tness, what will happen: genotypes aa, aa, aa; each genotype mates completely assortatively. **non-random mating perturbs hwe but doesn"t cause evolution.
