Question

Explain ABO blood group

Answer 1

Dear Student,

◆ ABO blood group system -

• Carl Landsteiner classified blood groups according to presence/absence of antigens A & B on RBCs.

1. Group A have A antigen.
2. Group B have B antigen.
3. Group AB have both A & B antigen.
4. Group O have no antigens.

• Blood group O is called universal donor because it dont have any antigens.
• Blood group AB is called universal acceptor because it doesn't produce any antibodies.

Thanks dear. Hope this helps you...

Answer 2

ABO blood group:

ABO blood group is the process of grouping blood according to the presence or absence of both A and B antigens on the RBC membrane or a and b antibodies in plasma. The theory is presence of "A antigen marks absence" of an antibody in blood and same for B antigen and b antibody.

• The gene of ABO system is present on "chromosome 9" of humans. A and B antigens are oligosaccharides present on RBC membrane.

• Presence of An antigen on RBC and "b antibody in plasma" marks the person A blood grouped.

• Presence of B "antigen on RBC" and an antibody in plasma marks the person B blood grouped.

• The presence of both "A and B antigens" marks the person AB and presence of none of the antigens mark the person O.