Question

The dominant allele is for black fur. The recessive allele is for white fur.

A mouse that is homozygous for the dominant trait has the genotype
. It has
.
A mouse that is homozygous for the recessive trait has the genotype
. It has
.

Answer 1

A mouse that is homozygous for the dominant trait (black fur) has the genotype **BB**. It has **black fur**.

A mouse that is homozygous for the recessive trait (white fur) has the genotype **bb**. It has **white fur**.