In northern Canada, a population of rabbits was predominantly white in color. The allele for white color is recessive (g), while the allele for gray color is dominant (G).
Over the last several decades, the average annual temperature of this area has
increased, and the long-term deposits of ice and snow have become scarce. We see
the result of this change in the graph above. Which of the following explanations for
the change in allele frequency shown in the graph best aligns with the theory of
natural selection?
No population can maintain equilibrium indefinitely
In a large population, mating is random, without mutations the allelic frequency
changes over time.
Random mating occurred among the rabbits and the allelic frequency was
altered.
Genetic variation existed. Natural selection occurred. Allelic frequencies
changed.