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NDA 2024 GAT · General Knowledge · Human Physiology · easy

The universal donor blood group in the ABO and Rh system is

Single correct option

The universal donor blood group in the ABO and Rh system is
  1. A. AB positive
  2. B. A positive
  3. C. B negative
  4. D. O negative
Show answer and solution

Answer: (D) O negative

O negative red cells have no A or B antigens and no Rh antigen, so they can be given to people of any group in an emergency. AB positive is the universal recipient. Groups A and B carry antigens that would provoke a reaction in some recipients.
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Original question written in the NDA 2024 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake