AP BIOLOGY

Detailed explanation-1: -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-2: -Microevolution is defined as a change in allele frequencies in a population over time. 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-3: -Microevolution is defined as changes in the frequency of a gene in a population. These are subtle changes that can occur in very short periods of time, and may not be visible to a casual observer.

Detailed explanation-4: -Microevolution is simply a change in gene frequency within a population. Evolution at this scale can be observed over short periods of time-for example, between one generation and the next, the frequency of a gene for brown coloration in a population of beetles increases.

Detailed explanation-5: -Microevolution vs Macroevolution A change that occurs in a population due to changes in allelic frequencies is known as microevolution. Large-scale and visible changes that occur above the level of species are known as macroevolution. The change occurs at an intraspecific level.