Consider the following scenario:

Question

In a certain dog breed, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. What genotypes for this dog breed would lead to a spotted phenotype?

(1 point)
Responses

bb
bb

Bb
Bb

BB
BB

BB and bb

Answer 1

In this scenario, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. To have a spotted phenotype, a dog must have two recessive alleles, since the presence of at least one dominant allele (B) would result in a black coat.

Thus, the only genotype that would lead to a spotted phenotype is:

bb

So, the correct response is: bb.