Which of these statements is correct in the human ABO blood grouping system?

Biology

WAEC 1994

A. B is recessive
B. A is dominant over B
C. O is recessive
D. O has antigene A and B
E. A and B are both recessive

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Correct Answer: Option D

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Which of these statements is correct in the human ABO blood grouping system?

Correct Answer: Option D

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