the dominant allele is for black fur. the recessive allele is for white fur. a mouse that is homozygous for…

Brief Explanations:

In genetics, a homozygous dominant individual has two copies of the dominant allele (represented as uppercase letters), and will show the dominant trait. A homozygous recessive individual has two copies of the recessive allele (represented as lowercase letters), and will show the recessive trait. Here, the dominant trait is black fur and recessive is white fur.

Answer:

A mouse that is homozygous for the dominant trait has the genotype BB. It has black fur. A mouse that is homozygous for the recessive trait has the genotype bb. It has white fur.