Question

Jessica's mother has the blood type AB and her father has the blood type O. Which blood type could Jessica have?

Answer 1

Jessica could have type A or type B.

Explanation:

Each parent donates one of the ABO alleles to Jessica. Her mom donates either A or B. Her dad donates only o. Jessica will be either Ao or Bo, which correspond to type A and type B.

`color(white)(aaaaa)`A `color(white)(aaaaa)`B

o`color(white)(aaaa)`Ao`color(white)(aaaa)`Bo

o`color(white)(aaaa)`Ao`color(white)(aaaa)`Bo