In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). If a red spotted male was crossed with a black solid female and all the offspring from several crosses were only black and solid, the genotype of the female would be ____.
A)BB SS
B)Bb SS
C)Bb Ss
D)BB Ss
E)bb ss

Question

Quizplus · Accepted Answer

Since all of the offspring were black and solid, the male parent must have contributed a B and an S allele. Therefore, the female parent would have to have a BB genotype and an SS genotype to only produce black and solid offspring.

In Cocker Spaniels, Black Coat Color (B) Is Dominant Over