A man  with blood group 'A'  marries a woman  with blood group 'B'.  What are  all the  possible blood  groups of their offspring?

detailed solution

Correct option is A

A man with blood group A marries a woman with blood group B. The genotype of the man may be IAIAor IAi The genotype of the woman can be IBIBor IBi If the man has genotype IAIA and woman has genotype IBIB then all the offspring produced will have genotype of IAIB. But we no such options. Therefore, we will assume that the genotype of man is IAi and the genotype of woman is IBi.IAi X IBi.Gametes of man is: IA and iGametes of woman is: IB and iThe genotypes of the offspring are IAIB, IAi, IBi and ii