Because blood type is inherited, it is used as evidence in paternity cases. A mother is blood type A (that is her phenotype). Her child is type O. Three men claim paternity. Use what you have learned about blood type and Punnett squares to solve the problem. Baby’s genotype

What does the mother’s genotype have to be? Why?

What allele did the baby get from its mother?

What allele did they get from their father?

Use Punnett squares to show whether the following men are possible fathers. Use the same mother in all three Punnett squares. Identify the most likely father.

Male 1: type AB Male 2: type A Male 3: type O