JAMB Biology 2021 Objective — Question 12
Question 12 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2021 Objective paper, with the correct answer and a full explanation.
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12. Which of the following blood types has no antibody? (a) O (b) A (c) AB (d) B
- A. O
- B. A
- C. ABCorrect
- D. B
Explanation
Blood type A has antigen A and antibody B; type B has antigen B and antibody A; type AB has antigens A & B but no antibody; type O has no antigen but has antibodies A & B. So AB has no antibody.
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