A man with blood group It IA IA is married to a woman with blood group IA IO. The blood group of their son is likely to be

A man with blood group It I^A I^A is married to a woman with blood group I^A I^O. The blood group of their son is likely to be

Answer Details

The man has blood group IA IA, which means that he has two copies of the A allele. The woman has blood group IA IO, which means she has one A allele and one O allele. When they have a child, each parent passes one allele to their child. The possible combinations of alleles that their child can inherit are IA from the father and IA or IO from the mother. So, the child can have blood group IA IA, IA IO, or IO IO. However, the child cannot have blood group B or AB because neither parent has the B allele. Therefore, the likely blood group of their son is A.