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Question

A person with blood group O has
  1. Only anti- B antibodies
  2. Only anti- A antibodies
  3. Both anti- A and anti- B antibodies
  4. Both A and B antigens

A
Both anti- A and anti- B antibodies
B
Only anti- B antibodies
C
Only anti- A antibodies
D
Both A and B antigens
Solution
Verified by Toppr

The blood group found in human beings are of four principal types: A, B, AB and O. These types are differentiated on the basis of two antigens A and B and two antibodies A and B present in the blood types. The specific combination of antigens and antibodies determines an individual's blood type. A person with blood group O has no antigen on the surface of the RBC but has both, anti- A and anti- B antibodies in his plasma.
Therefore, the correct answer is option C.

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