A widow's peak is a V-shaped area of the hairline in the center of the forehead. The allele for having a widow's peak is dominant to the allele for not having a widow's peak.If two parents do not have widow's peaks, what is the probability that their child will have a widow's peak? (1 point)

Question

A widow's peak is a V-shaped area of the hairline in the center of the forehead. The allele for having a widow's peak is dominant to the allele for not having a widow's peak.If two parents do not have widow's peaks, what is the probability that their child will have a widow's peak? (1 point)

O 75%
• 50%
• 25%
• 0

Answer 1

Since both parents do not have widow's peaks, they both must be homozygous recessive (ww) for the trait. Therefore, they can only pass on the recessive allele for not having a widow's peak to their child.

If both parents can only pass on the recessive allele, then the child will also not have a widow's peak. Therefore, the probability that their child will have a widow's peak is 0%.