ANATOMY

Detailed explanation-1: -An AB parent can indeed sometimes have an O child. But it is by no means common. In fact it would be fair to say that it is exceedingly rare. Usually, an AB parent and an A parent can only have children who are Type A or Type B.

Detailed explanation-2: -For example, a man who has type AB blood could not father a child with type O blood, because he would pass on either the A or the B allele to all of his offspring. Despite their usefulness in this regard, ABO blood groups cannot be used to confirm whether a man is indeed a child’s father.

Detailed explanation-3: -1) Is it possible for a man with type AB blood to be the father of a daughter with type O blood? Demonstrate your answer using Punnett squares. No, the daughter would have to be type A or B. Even if the mother was OO, the father has no O allele to pass on.

Detailed explanation-4: -Believe it or not, in this case having a blood type different from either parent is by far the most common result. In most cases, an O parent and an AB parent will have only A or B kids.