AP BIOLOGY

Detailed explanation-1: -There are a few basic ways in which microevolutionary change happens. Mutation, migration, genetic drift, and natural selection are all processes that can directly affect gene frequencies in a population.

Detailed explanation-2: -Microevolution is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift.

Detailed explanation-3: -Three mechanisms can cause allele frequencies to change: natural selection, genetic drift (chance events that alter allele frequencies), and gene flow (the transfer of alleles between populations).

Detailed explanation-4: -They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.