Question

A case was registered against the progeny being exchanged at the hospital. The doctors used blood groups to solve the case. The blood group genotype of parents was IAi and IAIB. What was the blood group of the child who was wrongly placed as their child?

(a) A

(b) B

(c) AB

(d) O

This question was posed to me during an interview.

I'm obligated to ask this question of Inheritance Principles in division Principles of Inheritance and Variation of Biology – Class 12

Answer 1

Right option is (d) O

The best I can explain: The progeny of these parents can have IAIA, IAIB, IAi, and IBi. Thus, the progeny can have either A, B, or AB blood groups. The progeny with O blood group will be the only case that can be solved simply based on blood groups.