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

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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.

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