NEET2009ZoologyBody Fluids and CirculationActual
The most popularly known blood grouping is the ABO grouping. It is named ABO and not A B C , because ' O ' in it refers to having
Options
- Aother antigens besides A and B on RBCs
- Bover dominance of this type on the genes for A and B types
- Cone antibody only-either anti-A or anti-B on the RBCs
- Dno antigens A and B on RBCs
Correct answer
D. no antigens A and B on RBCs
Step-by-step solution
Landsteiner divided human population into four groups based on the presence of antigens found in their RBCs. Each group represented a blood group. Thus, there are four types of blood groups A, B, AB and O. Blood group ' O ' does not contain any antigen on RBCs, hence can be given to any person, that's why this blood group is called universal donor.