Due to the F1 generation phenotypic ratio of 1 A group, 2 AB groups, and 1 B groups, a child with AB blood group can be born to AB blood group parents. The right answer is "B."
Blood type AB requires possession of both the A and B alleles. There must be an AB genotype. If both of a child's parents have blood types A and B, the answer is yes, the child can have blood type O. Human ABO blood grouping is governed by the gene I. The gene's three alleles are IA, IB, and I. The blood types of both parents determine the child's blood type. The two alleles that each parent possesses make up the child's blood type.
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