RE-NEET2026Zoology-Human Genetics

RE-NEET 2026 Zoology Blood Groups MCQ Question

Type: MCQ-conceptual-Hard

For a person with blood group ‘O’, which of the following is not a possible combination of parents’ blood group genotypes?

A

Father: Iᴬi and Mother: Iᴬi

B

Father: Iᴮi and Mother: Iᴮi

C

Father: Iᴬᴮ and Mother: Iᴬi

D

Father: Iᴬi and Mother: Iᴮi

Correct Answer

Option C

Detailed Explanation

A person with blood group ‘O’ must have parents with at least one ‘i’ allele each, which is not possible if one parent is Iᴬᴮ.

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