Question

Blood group of mother is A. That of son is B. What is blood group of father ___________.

• A. B
• B. A
• C. O
• D. None of the above.

Answer 1

The correct option is A B

The genotype of mother is I^AI^O, the blood group is A and father is I^BI^O , blood group is B. The blood group of son is B, and the genotype is I^BI^O.

So the correct answer is B.