Q. The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because O in it refers to having:
A) overdominance of this type on the genes for A and B types
B) one antibody only – either anti-A or anti-B on the RBCs
C) no antigens A and B on RBCs
D) other antigens besides A and B on RBCs
Explanation
[Solution from source] Group O red cells carry neither antigen A nor antigen B on their surface, so 'O' stands for the absence (zero) of these antigens. The O allele is recessive, not overdominant, and antibodies are in the plasma, not on the RBCs. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.