Black is dominant over white in the coat color of guinea pigs. Assume that a cross is made between a hybrid male black guinea pig (Bb) and a hybrid female black guinea pig (Bb). B = gene for black; b = gene for white.
What fraction of the guinea pigs have black coats?
A.1/4
B.1/2
C.3/4
D.all
bascally if you dothe punnet square you willget BB, Bb, Bb and BB ans since Bb is counted as black then you will have 3 out of four pigs that are black
