12. You find an isolated population of bumblebees living on an island in the middle of the Pacific Ocean. You find that some of the bumblebees have blue butts, a trait that is controlled by a single loci with two allelic variations, blue and yellow. You also find that the frequency of the blue butt allele is 0.75 in the population. If the blue butt allele goes to fixation, what will be the proportion of heterozygotes in the population?
a. 100%
b. 75%
C 25%
d. 0%