F13 lecture 10

25 aa 50 09 045 aa 25 08 02 09 total mean tness

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Unformatted text preview: of any deleterious recessive in heterozygous condi7on = 1/8 –  in 1st genera7on this jumps to ¼ because the one male has to father all of the progeny (half of all the alleles) –  even with random ma7ng (HWE), 1/16 of all progeny will be homozygous recessives for male’s deleterious recessive •  => the effects of this situa7on are the same as true inbreeding h@p://en.wikipedia.org/wiki/Speke%E2%80%99s_gazelle natural selec7on on genotypes •  different fitnesses among genotypes –  we talked about fitness previously –  here, we will use quan77es to define absolute and rela7ve fitness genotype absolute fitness ˜ (# offspring) rela?ve fitness (w) selec?on coefficient (s = 1 – w) AA 60 1 0 Aa 60 1 0 aa 48 0.8 0.2 genotype absolute fitness (# offspring) rela?ve fitness (w) selec?on coefficient (s = 1 – w) AA 60 1...
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