Stickleback fish are collected from a lake in Alaska. 600 from the sample are spineless, which is a recessive trait in the fish. 80 of the fish collected have spines. Calculate: A. The frequency of recessive alleles in the population (p):

B. The frequency of dominant alleles in the population (q):

C. The percentage of individuals in the population that are heterozygous:

D. Provide an explanation for why so many fish in the lack display the recessive trait: