A child of a mother with blood group A and a | vedclass

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(D) The mother has blood group $A$, so her possible genotypes are $I^A I^A$ or $I^A i$.The father has blood group $AB$, so his genotype is $I^A I^B$.I

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$O$

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(D) The mother has blood group $A$, so her possible genotypes are $I^A I^A$ or $I^A i$.The father has blood group $AB$, so his genotype is $I^A I^B$.If we cross $I^A I^A 	imes I^A I^B$, the offspring can have genotypes $I^A I^A$ (Group $A$), $I^A I^B$ (Group $AB$).If we cross $I^A i 	imes I^A I^B$, the offspring can have genotypes $I^A I^A$ (Group $A$), $I^A I^B$ (Group $AB$), $I^A i$ (Group $A$), or $I^B i$ (Group $B$).In both cases, the genotype $ii$ (Group $O$) is impossible because the father must contribute either an $I^A$ or $I^B$ allele to the child. Therefore, the child cannot have blood group $O$.

A child of a mother with blood group $A$ and a father with blood group $AB$ may have any one of the following blood groups except

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