What is the phenotype of a mouse that has the genotype Bo where B is the gene for black fur and b is the gene for brown fur assuming this gene follows a Mendelian inheritance patter? (1 point)

A. • fur with brown hairs
B. • fur with yellow hairs
C. • fur with both black and brown hairs
D. • fur with black hairs

D. • fur with black hairs

The phenotype of a mouse with the genotype Bo, where B is the gene for black fur and b is the gene for brown fur, assuming Mendelian inheritance patterns, would be: D. Fur with black hairs.

To determine the phenotype of a mouse with a genotype of Bo, where B represents the gene for black fur and b represents the gene for brown fur, we need to understand the concept of Mendelian inheritance.

In Mendelian inheritance, the dominant gene (represented by a capital letter) will determine the phenotype, while the recessive gene (represented by a lowercase letter) will only be expressed if both alleles are recessive.

In this case, the dominant gene B is for black fur while the recessive gene b is for brown fur.

Since the mouse has a genotype of Bo, it has one copy of the dominant gene B, which means it will display the phenotype associated with that gene. Therefore, the phenotype of the mouse with the genotype Bo will have fur with black hairs.

So, the correct answer is D. • fur with black hairs.