Question

Select the correct answer.

A man has blood type AB and his wife has blood type B. What are the possible blood types for their child?

A. blood types A and B
B. blood type AB
c. blood types A, B, and AB

Which one is it​

Answer 1

The answer is C.

The man’s genotype must be AB. The woman’s genotype can be either BB or BO as both correspond to a blood type (which is a phenotype) of B.

Each parent passes on one allele. The man can contribute A or B and the woman can contribute B or O.

The possible genotype combinations are therefore AB, AO, BB, and BO. These correspond to the phenotypes AB, A, B, and B.