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.

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.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.