Question

Blood type in humans is an example of trait that has multiple alleles. The alleles for type A blood and type B blood are codominant, and type O blood is recessive to both type A and type B. If a girl with type AB blood has a brother with type O blood and a sister with type B blood, which of the following genotypes could it be possible for their parents to have?

Answer 1

@malcolmmcswain

Answer 2

AO and BO
AB and OO
AB and BO
AO and AB

Answer 3

Is it AO and BO

Answer 4

Yup! You're right ^-^

Answer 5

I am Awesome ! Thanks! Can you help me out with a couple more or no?

Answer 6

Sure. :)