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 one allele for a hairy body and one allele for a hairless body.
based on this information, click the blue words to correct any errors in the text.
dipper’s phenotype for the body hair trait is a hairy body.
dipper’s genotype for the body hair gene is bb.
dipper is homozygous for the body hair gene.

Explanation:

1. The first statement correctly identifies Dipper's observable trait (hairy body) as his phenotype, so no correction is needed.
2. Dipper has one allele for hairy body (B) and one for hairless body (b), so his genotype is heterozygous, not BB.
3. An organism with two different alleles for a gene is heterozygous, not homozygous.

Answer:

• Dipper's phenotype for the body hair trait is a hairy body. (No correction needed)
• Dipper's genotype for the body hair gene is $\boldsymbol{Bb}$.
• Dipper is $\boldsymbol{heterozygous}$ for the body hair gene.