The increased variability in the frequency of the b+ allele in the smaller flour beetle population in the graph above is an example of ____.
A)genetic drift
B)gene flow
C)the founder effect
D)a fixed allele
E)a dimorphic trait

Question

Quizplus · Accepted Answer

Genetic drift refers to random changes in allele frequencies in small populations. The increased variability in the frequency of the b+ allele in the smaller flour beetle population is indicative of genetic drift because it is not due to selective pressure or gene flow but rather a random fluctuation in allele frequencies.

The Increased Variability in the Frequency of the B+ Allele