Question

In a group of deer mice, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele B is for a hairy body, and the allele b is for a hairless body.
Dipper, a deer mouse from this group, has a hairy body. Dipper has two alleles for a hairy body.
Based on this information, what is Dipper's phenotype for the body hair trait?

Answer 1

Dipper's phenotype for the body hair trait is "hairy body." Since Dipper has two alleles for a hairy body (BB), this phenotype is consistent with having the dominant allele for the trait. In this case, the presence of the dominant B allele results in the hairy body phenotype.