If a child has AB blood group and the father | vedclass

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(B) The blood group of the child is $AB$,which means the genotype is $I^A I^B$. One allele ($I^A$ or $I^B$) must be inherited from the father and the

Vedclass · Accepted Answer

$B, O$

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(B) The blood group of the child is $AB$,which means the genotype is $I^A I^B$. One allele ($I^A$ or $I^B$) must be inherited from the father and the other from the mother. The father has blood group $B$,so his genotype is either $I^B I^B$ or $I^B i$. Since the child must receive the $I^A$ allele from the mother,the mother must possess at least one $I^A$ allele. Therefore,the mother's genotype must contain $I^A$. Possible genotypes for the mother are $I^A I^A$,$I^A I^B$,or $I^A i$. This corresponds to blood groups $A$ or $AB$. Consequently,the mother cannot have blood group $B$ or $O$ because neither of these contains the $I^A$ allele required for the child to have an $AB$ blood group.

If a child has $AB$ blood group and the father has $B$ blood group,which blood group cannot the mother have?

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