In dogs, black coat color (B)is dominant over brown (b), and solid coat color (S)is dominant over white spotted coat (s).A cross between a black, solid female and a black, solid male produces puppies with only black, solid coats.This same female was then mated with a brown, spotted male.Half of the offspring from this cross were black and solid, and half of the offspring were black and spotted.What is the genotype of the brown, spotted male?
A)BBSS
B)BbSS
C)BBSs
D)BbSs
E)bbss

Question

Quizplus · Accepted Answer

The brown, spotted male must have the recessive alleles for both traits (bbss) because brown (b) and spotted (s) are both recessive, and the male expresses these phenotypes.

In Dogs, Black Coat Color (B)is Dominant Over Brown (B)