Question

Which major change can occur in a small population that is the result of the genetic drift?

A. recessive traits always become dominant
B. new individuals add their genes to the gene pool
C. large changes in allele frequencies can occur in a short time.

Answer 1

The answer is C. large changes in allele frequencies can occur in a short time.

Genetic drift is a change in the frequency of alleles in a population as a result of random sampling of organisms and it decreases genetic variation of the population. In specific circumstances, large and rapid changes in allele frequencies can occur in a short time. The smaller the population, the more susceptible it is to genetic drift.