Biologyhard · Past Paper
If a child has blood group AB and the mother has blood group A, what can NOT be the blood group of the father?
AB
BAB
CO
DA (if father is heterozygous)
✓ Correct Answer: C — O
An AB child receives IA from one parent and IB from the other. An O parent (ii) cannot provide an IA or IB allele.
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