Question

in humans, widow peaks are dominant to straight hairlines and freckles are dominant to no freckles. A woman who is homozygous for her widow's peak and heterozygous for freckles marries a man that has a straight hairline and is also heterozygous for freckles. Determine the phenotypic ratio. What is the probability that they have a child who looks like dad?

Answer 1

Answer: None.

Explanation: Since the mother is homozygous dominant for a widows peak, it would mask the recessive gene of the father’s straight hairline. There is a 100% chance that the child will have a widows peak, and a 75% that the child will have freckles.