A person with unknown blood group under ABO system, has suffered much blood loss in an
A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?
(a) Type AB
(b) Type O
(c) Type A
(d) Type B
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Correct Option (b) Type O
Explanation:
Blood type 'O' has no antigen but both types of antibodies 'a' and 'b'. The person with blood type 'O' is universal donor.
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