question_answer

A man of 'A' blood group marries a woman of AB' blood group, which type of progeny would indicate that man is heterozygous ?

A)  O                                           

B)  B

C)  A                                           

D)  AB

Correct Answer: B

Solution :

              In this case progeny with blood group B is produced only when man is heterozygous i-e, \[{{\text{I}}^{\text{A}}}{{\text{I}}^{\text{O}}}\text{.}\]