Question

A boy has the blood group AB. What is true of the inheritance of this blood group in his case?

• A. His parents should be one with O group and the other with B group
• B. His parents should be one with O group and the other with A group
• C. Both his parents should be with B group
• D. His father should be A group and mother with B group

Answer 1

The correct option is D His father should be A group and mother with B group

Since the boy has AB blood group, that means he possesses A and B alleles that must be transmitted from his parents to the boy. That is only possible when one parent has A blood group while the other has B blood group.

So, the correct option is 'His father should be A group and mother with B group'. i.e option D