WAEC Biology 2022 Objective — Question 21
Question 21 of 50 from the West African Examinations Council (WAEC) Biology 2022 Objective paper, with the correct answer and a full explanation.
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If the number of chromosomes in the skin cells of mammals is 46, how many chromosomes would be found in P and Q respectively?
- A. 23 and 23Correct
- B. 23 and 46
- C. 46 and 23
- D. 46 and 46
Explanation
Gametes (P and Q, sex cells) are haploid, containing half the number of chromosomes found in body/somatic cells. Since somatic cells have 46, each gamete (P and Q) has 23 chromosomes.
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