The diagram shows the frequency of alleles A and a in a population over three generations. The starting allele frequency of A is p = 0.6.
The population remains in the same location and does not experience any environmental changes. Which best describes what is happening to the population over three generations?
a
reproductive isolation
b
allopatric speciation
c
genetic drift
d
founder effect
c genetic drift
Genetic drift is the change in allele frequencies in a population that occurs by chance, particularly in small populations. In this case, the change in allele frequencies over three generations is likely due to genetic drift rather than other factors such as reproductive isolation, allopatric speciation, or the founder effect.