the blood-typing system is based on the presence or absence of antigens. A person with antigens A has blood type A. A person with antigen A has a blood type B, and a person with both antigens has the blood type AB. IF there are no antigens, then teh blood type is O. In addition, blood types are also identified as RH-positive or rh-negative based on a different antigen. what is teh probability that a person has the antigen A or B?"