What is Evolution That Occurs as a Result of a Dramatic

Question

What is evolution that occurs as a result of a dramatic reduction in population size?
A) founder effect
B) genetic drift
C) gene flow
D) population bottleneck

Accepted Answer

Evolution that occurs as a result of a dramatic reduction in population size is called a population bottleneck. This can lead to a loss of genetic diversity and an increased incidence of genetic disorders or traits in the remaining population. The founder effect also involves a reduction in population size but specifically refers to the establishment of a new population by a small number of individuals, while genetic drift is a random change in allele frequencies within a population, and gene flow is the movement of genes from one population to another.