4 What are the possible blood types of a baby with a mom who is heterozygous for blood type A and a dad. In the ABO blood system what isare the possible genotypes for a person who has the O blood type. Pin On Amoeba Sisters Images х Blood Type Genotypes Unanswered Match the genotypes below to the correct blood type phenotype. . These are determined by their genotype. A B and O. 1 If An Individual Has The A Blood Type How Many Different Genotypes Can They Possess. The genotype is OO. Approximately 45 percent of Caucasians are type O positive or negative but 51 percent of. Or - since - is recessive. Answered 3 years ago Author has 119 answers and 1063K answer views. A and B are equally dominant so that when they get together they create a new blood type. A B and O. Using a scratch piece of paper make a punnett square s to answer the problem below. The antigens on the blood cell are B and the...