Question

changes in gene pools practice questions
which of the following increases variation in a gene pool?
a. natural selection
b. extinction
c. mutations
d. genetic drift

Explanation:

Mutations introduce new genetic material into a gene pool by changing the DNA sequence. Natural selection reduces variation by favoring certain traits. Extinction removes genetic variation when a species dies out. Genetic drift changes allele frequencies randomly but usually reduces variation in small populations over time.

Answer:

C. mutations