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NEET UG BIOLOGY MCQ: PRINCIPLE OF INHERITANCE AND VARIATION

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Assertion (A): There are six different combinations or genotypes of the human ABO blood types.

Reason (R): The gene

(I)

has three alleles

I^A, I^B

and

I^{O}.

View answer and explanation

Correct option: A

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

The correct answer is A (Both (A) & (R) are true and the (R) is the correct explanation of the (A)) because the ABO blood group system has three alleles, leading to six possible genotypes.

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