Question

The possible blood groups of children born to parents having A x AB groups are

• A. O, A, B
• B. O, A, B, AB
• C. O, A
• D. A, B, AB

Answer 1

The correct option is D A, B, AB

The genotype of parent with blood group A can be $I^A{I}^A$ or $I^{A}i$. Genotype of the parent with blood group AB will be $I^A{I}^B$. Working out the possibilities of the genetic combinations ii is the only impossibility.That means, blood group ‘O’ is not possible for the progeny.