3. Could a man with type AB blood be the father of a child with type O blood? Explain your answer utilizing Punnett squares (see Ch 29 in the text for an example).

No

Explanation:

Both A alleles and B alleles are dominant over the O alleles. This means that both parents must have an O allele present to even have a chance of having a child with type O blood. Lets say the mother has type O blood with the father having type AB blood. The possible combination would be: AO, BO, AO, BO. The punnett square should look like this:

A B

O AO BO

O AO BO