An infant is born with blood type AB. The father is type A and the mother is type B. The father asks why the baby has a blood type different from that of the parents. The nurse's answer should be based on the knowledge that

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Quizplus · Accepted Answer

Types A and B are equally dominant, and the baby can thus inherit one from each parent. Both types A and B are dominant, not recessive. The infant has inherited both blood types from the parents and this is not a mutation. Both blood types A and B are equally dominant.

An Infant Is Born with Blood Type AB