Question

Someone who has the blood type AB had parents with _____ genes.

incomplete dominant
codominant
heterozygous
homozygous

Answer 1

codominant- both genes show up in the child

Answer 2

Someone who has the blood type AB had parents with _____ genes.
Now, we know that codominant means that both traits will be seen in the offspring, so that is OBVIOUSLY that answer. AB is for both parents, passing the trait, so both genes are seen.