You Are Studying Body Color in an African Spider and Have

Multiple Choice

You are studying body color in an African spider and have found that it is controlled by a single gene with four alleles: B (brown) , b^r (red) , b^g (green) , and b^y (yellow) . B is dominant to all the other alleles, and b^y is recessive to all the other alleles. The b^g allele is dominant to b^y but recessive to b^r. You cross a pure-breeding brown spider with a pure-breeding green spider.
-Predict the phenotype of the progeny.

A) half brown, half green
B) three-fourths brown, one-fourth green
C) all brown
D) all green
E) all yellow