The most popularly known blood grouping is the ABO grouping.

Home » Advanced Zoology » Body Fluids and Circulation » Question

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because “O” in it refers to having:

1. overdominance of this type on the genes for A and B types
2. one antibody only - either anti - A or anti- B on the RBC;
3. no antigens A and B on RBCs
4. other antigens besides A and B on RBCs

Correct Option: C

The ABO blood group system is the most important blood type system (or blood group system) in human blood transfusion. It is named ABO and not ABC, because blood group O (or blood group zero in some countries) individuals do not have either A or B antigens on the surface of their RBCs, but their blood serum contains IgM anti-A antibodies and anti-B antibodies against the A and B blood group antigens. Therefore, a group O individual can receive blood only from a group O individual, but can donate blood to individuals of any ABO blood group (ie A, B, O or AB).