This result tells us that the allele frequency of a is 0.3.

For purpose of create balance in allele frequency, usually case-control studies.

Microevolution is the changes in allele frequencies that occur over time within a population.

Migration into or out of a population may be responsible for a marked change in allele frequencies.

In the field of animal production, allele frequency can be modified using selection.

Selection, in general, causes allele frequencies to change, often quite rapidly.

Mutation will have a very subtle effect on allele frequencies.

In general, allele frequencies will become more homogeneous among the populations.

Small population size can cause a random change in allele frequencies.

With this data they built a map of allele frequency and geographic location.