In cocker spaniels black coat color B is dominant over red b

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 were crossed to a black solid female and all the offspring from several crosses showed only the dominant traits, the geneotype of the parents would most likely be Bb Ss times Bb Ss. bb ss times Bb Ss. bb Ss times Bb SS. bb ss times BB SS. Bb ss times BB SS.

Solution

Answer: (d) bbss x BBSS

P1=

bbss (Male) x BBSS (female)

F1= BbSs ( black and solid)

All the offsprings will be black and solid (both the traits being dominant)