AP BIOLOGY

Detailed explanation-1: -Microevolution, or evolution on a small scale, is defined as a change in the frequency of gene variants, alleles, in a population over generations. The field of biology that studies allele frequencies in populations and how they change over time is called population genetics.

Detailed explanation-2: -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-3: -Microevolution is changes in the gene pool of a population over time that result in changes to the varieties of individuals in a population.

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: -Genetic drift is change in allele frequencies in a population from generation to generation that occurs due to chance events. To be more exact, genetic drift is change due to “sampling error” in selecting the alleles for the next generation from the gene pool of the current generation.