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 expressed only the dominant traits, the genotype of the female would be
A) BB SS .
B) Bb SS .
C) Bb Ss .
D) BB Ss .
E) none of these.

Question

Quizplus · Accepted Answer

The female must be homozygous dominant for both traits (BB SS) to ensure all offspring express the dominant traits, regardless of the male's genotype.

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