Question

The major importance of meiosis lies in:

• A. Development of mutations
• B. Sexual reproduction
• C. It transfers chromosomes through mitosis
• D. It maintains chromosomes number generation after generation

Answer 1

The correct option is D

It maintains chromosomes number generation after generation

The correct option is D:

Explanation of the correct option:

1. Meiosis involves two successive cycles of nuclear division and one cycle of DNA replication.
2. It consists of two divisions i.e, meiosis I and meiosis II.
3. Meiosis I is called reductional division and the chromosome number is reduced to half.
4. Meiosis II is called equational division and the chromosome number remains the same.

The major importance of meiosis:

1. Formation of gametes: Produces gametes for sexual reproduction.
2. Maintenance of chromosome number: Meiosis reduces the chromosome number to half so that the original diploid number is restored.
3. Introduction of variations: Meiosis brings out a chance for variation.

Final answer: The major importance of meiosis lies in maintaining chromosome numbers generation after generation.