Question

Two parents think their baby was
switched at the hospital. One parent
has blood type “AB,"the other is
heterozygous for blood type “B," and
the baby has blood type “o.” What is
the likelihood of the parents having
a baby with the Type O phenotype?​

Answer 1

Answer: 0%

Explanation: If you set up a Punnet square with both parents' blood types, you will end up with the following possibilities: BB, BO, AB, AO. This means that the baby can only end up with type B, AB, or A blood, because type O blood is recessive.