PCB 4674C Lecture Notes - Lecture 29: Genotype Frequency, Allele Frequency
Document Summary
In the table below, we see all of the possible crosses, their frequencies, and the progeny and the proportion of different genotypes that will be produced from each cross. Aa x aa aa x aa aa x aa aa x aa. Column totals (d + h+ r)2 = 1. 2(d + 1/2 h) (1/2h + r) (1/2 h + r)2. Note that these column totals correspond to our formulae for determining allele frequencies from genotype frequencies: (d + 1/2 h)2 = p2. 2(d + 1/2 h) (1/2h + r) = 2pq (1/2 h + r)2 = q2. So, given the assumptions of hardy-weinberg, after 1 generation of random mating, genotype frequencies are at equilibrium with. The hardy-weinberg equilibrium is reached after 1 generation for populations with the same allele frequencies, even if they have very different genotype frequencies. So, for example, if we have two populations that have the following numbers of genotypes.
