Ownclasses

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

  • other antigens besides A and B on RBCs

  • over dominance of this type on the genes for A and B types

  • one antibody only-either anti-A or anti- B on the RBCs

  • no antigens A and B on RBCs

Answer

D.

no antigens A and B on RBCs

Landsteiner divided human population into four groups based on the presence of antigens found in their RBCs. Each group represented a blood group 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.

Landsteiner divided human population into four groups based on the presence of antigens found in their RBCs. Each group represented a blood group 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.