If a person has type ab blood, both his parents must have ________.
a. type o blood
b. type ab blood
c. type a blood
d. none of the choices are correct.
In order to have type ab blood, you need to have genotype blood type A and genotype blood type B. You could receive it from these scenarios: - Both of your parents are type ab blood or - One of your parents has type a blood while the other has type b blood
