Question

21. What is genetic drift?

a. Random change in population number
b. Random change in the amount of DNA in a population
c. A method of determining the relative age of a population
d. Random change in the allele frequency of a population
e. How scientists determine if two organisms are related

Answer 1

B.

Genetic drift is the change in the frequency of an existing gene variant in a population due to random sampling of organisms.