AP BIOLOGY

Detailed explanation-1: -Genetic drift is the change in frequency of an existing gene variant in the population due to random chance. Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. It could also cause initially rare alleles to become much more frequent, and even fixed.

Detailed explanation-2: -Is genetic drift random? In fact, genetic drift is random as it occurs as a result of pure chance, however, it affects small populations significantly unlike large populations that are not susceptible to change due to chance.

Detailed explanation-3: -Genetic drift is a process in which allele frequencies within a population change by chance alone as a result of sampling error from generation to generation. Genetic drift is a random process that can lead to large changes in populations over a short period of time.

Detailed explanation-4: -Random forces lead to genetic drift Sometimes, there can be random fluctuations in the numbers of alleles in a population. These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time.