Question

A woman with Type O blood and a man who is Type AB have are expecting a child. What are the possible blood types of the kid? 2. What are the possible blood types of a child who's parents are both heterozygous for "B" blood type?

Answer 1

a) The child can only have Type A (50% chance) or Type B (50% chance) because type O is recessive and the man carries no recessive O gene.
b) The child could have a 75% chance of having Type B or a 25% chance of having Type O.