Which of the following is an example of genetic drift?
a. a random mutation introduces a new trait into a population
b. a population migrates
c. a certain gene travels through a population over many generations
d. all of these
Question 2
A change in the frequency of a gene in a population over time due to entirely random factors is called __________.
a. gene flow
b. admixture
c. genetic drift
d. bottleneck effect