Question

a bobtail (shortened tail) is dominant over a normal tail in dogs. what would the phenotype of a dog be if its genotype is bb? bobtail bb normal tail unable to be determined

Explanation:

In genetics, dominant traits are expressed when at least one dominant allele is present. Recessive traits are only expressed when two recessive alleles are present. Here, the bobtail (shortened tail) is dominant (let's assume the allele for bobtail is \(B\)) and the normal tail is recessive (allele \(b\)). A dog with genotype \(bb\) has two recessive alleles. Since there is no dominant allele (\(B\)) to mask the recessive trait, the recessive trait (normal tail) will be expressed.

Answer:

C. Normal tail