JAMB Biology 2021 Objective — Question 28
Question 28 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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The number of chromosomes in the check [cheek] cell and the sperm cell of a human are respectively
- A. 50 & 25
- B. 46 & 23Correct
- C. 23 & 46
- D. 92 & 46
Explanation
A somatic cell (such as the cheek cell) has 46 chromosomes, while a sex cell (such as the sperm cell) has 23 chromosomes — a somatic cell has twice the number of chromosomes of a sex cell.
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