Final answer:
Population genetics is the study of the change in a population's genetic structure, the effect of chance on a population's gene pool, and the diversity of alleles and genotypes within a population.
Step-by-step explanation:
Population genetics is the study of the change in a population's genetic structure, the effect of chance on a population's gene pool, and the diversity of alleles and genotypes within a population. It focuses on how selective forces change allele frequencies in a population over time. For example, scientists study how natural selection, genetic drift, and founder effects can lead to significant changes in the genome of a population.