Question

The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in:

• A. Only testis
• B. Only ovary
• C. Both ovary and testis
• D. All body cells

Answer 1

The correct option is C

Both ovary and testis

The correct option is C

Explanation of the correct option:

1. Ovary and testis are the gonads in males and females respectively where gamete formation takes place.
2. Gametes are haploid (having half number of chromosomes).
3. They are formed after the meiotic division of the parent cell.
4. In meiosis, the number of chromosomes of the parent cell is halved.

Explanation of the incorrect option:

Option D:

1. All body cells do not undergo meiosis.
2. Body cells other than that of the ovary and testis undergo mitosis where the number of chromosomes is not changed.

Final answer: The kind of cell division where the number of chromosomes is halved occurs in the testis and ovary.