AP BIOLOGY

Detailed explanation-1: -Genetic Drift Example Consider a population of rabbits with brown fur and white fur, white fur being the dominant allele. Due to genetic drift, only the brown population might remain, with all the white ones eliminated.

Detailed explanation-2: -Genetic drift is the drifting of the frequency of an allele relative to that of the other alleles in a population over time as a result of a chance or random event. An example where the effect of genetic drift is magnified is the so-called bottleneck effect. Synonyms: allelic drift; Sewall Wright effect.

Detailed explanation-3: -For example, when a small population of fish is placed in a lake, the fish population will evolve into one that is different from the original. Fitness of a population is not considered in genetic drift, nor does genetic drift occur in a very large population.

Detailed explanation-4: -Ans: Gene flow is the transmission of genes across populations, while genetic drift is the changing of allele frequencies in small groups, which allows alleles to vanish, this is the key difference.