PCB 4674 Lecture Notes - Lecture 5: Genotype Frequency, Allele Frequency, Panmixia
6 Sep 2016
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We can more easily see the fundamental effects of selection plenty of time later to bring in more complexity! Incorporating selection: consider gene with two alleles, b and b begin with f(b) = 0. 6, f(b) = 0. 4, random mating produces following genotypes: . 62 bb, 2(. 6 x . 4) bb, ,42 bb in 100 individuals, 36 bb, 48 bb, 16 bb: now consider differential breeding success assume 100% survival to maturity for bb. 75% for bb and only 50% for bb exact values not important, they"re just to illustrate also not important now to consider exactly why their survival to maturity is different: of our 36 bb, all survive to reproduce. 75% of the 48 bb survive to reproduce = 36. 50% of the 16 bb survive to reproduce = 8: further simplify by assume all survivors contribute the same number of gametes e. g. 10 gametes each. Bb = 360 gametes, 180 b and 160 b bb = 80 gametes all b.
