A child with AB blood group who was born to a mother of the genotype IAIA cannot have the father of the genotype
A
IAIA
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B
IBIB
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C
IBIO
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D
IBIB and IBIO
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Solution
The correct option is AIAIA The genotype of the mother is IA IA. A child with blood group AB will have a genotype IA IB. This genotype of the child is possible in 2 cases either if the genotype of the father is IB IB or IB IO. But a genotype IA IA of the father will not result in AB blood group of the child. Thus the correct answer is option A.