A person who is blood type AB has
A) only antigen A on the surface of RBCs.
B) only antigen B on the surface of RBCs.
C) antigens A and B on the surface of RBCs.
D) antibodies A and B on the surface of RBCs.
E) only antibody A on the surface of RBCs.

Question

Quizplus · Accepted Answer

Blood type AB has antigens A and B on the surface of RBCs, but no antibodies on the surface. This is because individuals with blood type AB have both A and B alleles, which encode for the enzymes needed to produce both antigens on the surface of their RBCs. Therefore, they can receive blood from individuals with any ABO blood type without experiencing an adverse reaction.

A Person Who Is Blood Type AB Has