Overall, the forces that cause relative allele frequencies to change at the population level can also influence the selection forces that shape them over successive generations. For example ...

In this population we assume there is random mating and sexual reproduction without normal evolutionary forces such as ... would be allele frequencies of .6A and .4a and genotype frequencies ...

When mating is random in a large population, both the relative genotype and allele frequencies will remain constant. Since all of these disruptive forces commonly occur in nature, the Hardy ...