Question

Is it possible to have a parent with A type blood to have a child with O type blood?

Answer 1

Even though both parents still have blood type A, Dad can pass on either his A or his O gene version. Mom can also either pass on her A or her O. Because of this, you can see that there's 1 in 4 or 25% chance for a child to have OO, or blood type O.

Step-by-step explanation:

I hope this helps you well!