Question

A mother has blood type A, and a father has blood type B. Children produced by these two people could have which of the following blood types?

1. Type O

2. All of the choices are correct.

3. Type AB

4. Type A

Answer 1

Mother has blood type A ; the genotype of blood type can be IA  IA   or IA i

Father has blood type B ; the genotypes of blood type can be IB IB    or IB i

Human blood group is an example of codominance

From the genotypes of blood groups of parents it can be concluded that children produced from these parents can have - Type A, B, AB, O blood groups.

If IA   allele from mother combine with IB  allele of father then child will have AB blood group.

If IA allele from mother combine with i allele of father then child will have A blood group.

If i allele from mother combine with i allele of father then child will have O blood group.

If i allele from mother combine with IB  allele of father then child will have B blood group.

So all blood types are possible from these two parents.

Option 2 is the answer.

ALL OF THE CHOICES ARE CORRECT