Woman with blood group A marries a man with blood group O. Discuss the possibilities that (i) they produce children with blood group A only, and (ii) they produce children, some with O blood group and some with A blood group.

Explanation:

Woman with blood group A marries a man with blood group O.

The woman could be AA or AOwhile the man is OO

This, we have this if the woman is AA

A. A

O. AO. AO

O. AO. AO

If the woman is AO, we have

A. O

O. AO. OO

O. AO. OO

I. they produce children with blood group A only if the woman has the AA genotype for the blood group A

ii. they produce children, some with O blood group and some with A blood group if the woman has the AO genotype for the blood group A.

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