Question

on what basis the blood group is classified ​

Answer 1

ABO blood group system, the classification of human blood based on the inherited properties of red blood cells (erythrocytes) as determined by the presence or absence of the antigens A and B, which are carried on the surface of the red cells. Persons may thus have type A, type B, type O, or type AB blood.

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Answer 2

Explanation:

the blood groups are classified on the basis of the antigens and antibodies they posses..also they are further classified on the basis of the rhesus factor for it is positive or negative...jope that helps ☺