You have discovered a new bird. Molecular analysis reveals that breast feather color is controlled by a single gene with two alleles that segregate during meiosis. Breeding experiments, however, reveal a range of phenotypes resulting from each of the three genotypes that can occur. You are confused by this result until you remember that the relationship between genotype and phenotype can be complicated by the influence of the

a. parents.

b. epistasis.

c. environment.

d. additive genetic variation.

e. None of the above