The Better Breeding Blog Breed Better Animals

Last week covered two influences on the effectiveness of selection on changing gene frequencies: the initial gene frequency, and fitness differences. This week we go over a third influence: the degree of dominance with respect to fitness. Think of… more »

This post revisits several concepts discussed in the Population Genetics category. I’ve linked to the relevant pages as they come up below if you need a refresher. Assume a locus A with alleles A1 and A2. Either could be, but is not necessarily,… more »

Last week we derived a formula for calculating change in gene frequencies, given the initial gene frequency, the degree of dominance (if any), and the difference in fitness values (if any) of the various genotypes. This week we’ll use that formula… more »