Question

Name the antigen and antibodies present in the following blood groups. [3 mark]

1. Blood group A
2. Blood group B
3. Blood group O

Answer 1

1. Blood group A: A person with blood group 'A' has 'A' antigen on the RBC and anti-B antibodies in the plasma.[1 mark]
2. Blood group B: A person with 'B' blood group has 'B' antigen on the surface of the RBC and anti-A antibodies in the plasma. [1 mark]
3. Blood group O: A person with blood group 'O' has no antigens on the surface of the RBCs and has both anti-A and anti-B antibodies in the plasma. [1 mark]