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Unformatted text preview: ASSORTATIVE MATING Mating between organisms that share a similar trait. Flower color in plants especially with pollinator preference for a given color. Religions; races; etc Selfing is an extreme form of Inbreeding Inbreeding and Assortative mating both reduce the frequency of heterozygotes and increase the frequency of homozygotes compared to the Hardy-Weinberg genotype frequencies. Inbreeding and Assortative mating change genotype frequencies but DO NOT affect Gene frequencies. Inbreeding and assortative mating only change the way alleles are combined into genotypes. They do Not change allele frequencies. While inbreeding affects all loci (whole genome), assortative mating only affects locus or loci under assortative mating (for eg. flower color) and any loci tightly linked to that locus. With pure selfing (obligate selfers) the frequency of heterozygotes is 1/2 each generation....
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- Fall '07