Genetics problem: Mom is heterozygous for type A blood and Dad is homozygous for type B blood. The chance that their child will have type B blood is:
A)0%
B)25%
C)50%
D)100%

Question

Quizplus · Accepted Answer

The mom's genotype is AO, and the dad's genotype is BB. When crossing these genotypes, the possible offspring genotypes are AB, AB, BO, and BO. Thus, there's a 50% chance (2 out of 4) for the child to have type B blood (genotype BO).

Genetics Problem: Mom Is Heterozygous for Type a Blood and Dad