Question

Having a widow’s peak (a V-shaped hairline) is a dominant trait--“W.” Jess is heterozygous in terms of the widow’s peak allele. What is Jess’s genotype? Does Jess have a widow’s peak? Why or why not?

Answer 1

Answer: Genotype: W, w. Jess has a widow's peak since she is heterozygous for the trait.

Step-by-step explanation:

A dominant trait occurs when an individual has one dominant allele (W) and one recessive allele (w), or has two dominant alleles (W, W).

Jess is heterozygous for this trait, which means she has one dominant allele and one recessive allele (W, w). W, w is Jess's genotype. Since Jess has one dominant allele, she has a widow's peak.