Question

In humans, the allele for curly hair (H) is INCOMPLETELY dominant to the allele for straight hair (h). Individuals with the genotype Hh have wavy hair that is neither curly nor straight. Two wavy-haired heterozygotes have a child. What is the probability that their child will have straight hair? *
A) 1/4
B) 1/2
C) 1/1
D) 0/1

Answer 1

A. 1/4

You have Hh for both parents.

Mother: Hh

Father: Hh

You effectively have FOUR.

Answer 2

The answer is B) 1/2