A man with Type O blood has children with a woman who has Type AB blood. what blood types would represent the full range of possible phenotypes in children that the man and woman might have together
A and B alleles are both dominant over O, but neither one is dominant over the other. So these are what we call co-dominant alleles.
To have type A blood, you can be either AA or AO genotype, since A is dominant over O.
Same for ...