4. Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have hitchhiker's thumb marries a man who is heterozygous for hitchhiker's thumb. What is the probable genotypic ratio of their children? (SC.912.L.16.1)
The probable genotypic ratio of their children would be 50% Hh and 50% hh. This is because the woman does not have hitchhiker's thumb, so her genotype is hh. The man is heterozygous for hitchhiker's thumb, so his genotype is Hh. When these two genotypes are crossed, the possible combinations for the children are Hh and hh, resulting in a 50% chance for each genotype.
