WAEC Biology 2017 Objective — Question 45
Question 45 of 50 from the West African Examinations Council (WAEC) Biology 2017 Objective paper, with the correct answer and a full explanation.
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An apple plant can produce sexually and asexually and it has 40 chromosomes in its leaf cells. How many chromosomes would be in each gamete and somatic cell?
- A. A. 20 chromosomes in the gametes and 40 in the somatic cellsCorrect
- B. B. 40 in the gametes and 20 in the somatic cells
- C. C. 20 chromosomes in the gametes and 20 in the somatic cells
- D. D. 40 chromosomes in the gametes and 40 in the somatic cells
Explanation
Since leaf cells are somatic cells, the number of chromosomes in the somatic cell is 40. Always, the number of chromosomes in the gamete is half that in the somatic cell. Then, the gamete will contain 20 chromosomes.
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