Question

A person of which blood group can be a universal donor?
1. O
2. A
3. B
4. AB

Answer 1

Correct Answer - Option 1 : O

The correct answer is O.

• A person of blood group O can be a universal donor.
• Blood group
  • There are 4 main blood groups (types of blood): A, B, AB, and O.
  • Your blood group is determined by the genes you inherit from your parents.
  • Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.

 

• There are 4 main blood groups defined by the ABO system
  • Blood group A – A antigens on the red blood cells with anti-B antibodies in the plasma
  • Blood group B – B antigens with anti-A antibodies in the plasma
  • Blood group O – It has no antigens, but both anti-A and anti-B antibodies in the plasma
  • Blood group AB – It has both A and B antigens, but no antibodies.