Question

When a red blood corpuscle containing both A and B antigens are mixed with your blood serum, they agglutinate. Hence your blood group is ______.   

Options

• AB

• O

• A

• B

Answer 1

When a red blood corpuscle containing both A and B antigens are mixed with your blood serum, they agglutinate. Hence your blood group is O.

Explanation:

Blood group O individuals are antigen-negative but do carry both anti-a and anti-b antibodies. As a result, agglutination or clumping occurs when blood with both A and B antigens is combined with a blood type. Only blood group type O, which has both antibodies that cause clumping with antigens A and B, exists. As a result, a recipient of blood group O cannot accept blood from any other blood type.