In sexually reproducing organisms, the MAIN purpose of formation of haploid gametes by meiosis is to:
Correct answer: D. Maintain the diploid number of chromosomes in zygote
- A. Increase the chances of mutation
- B. Increase the growth rate of organisms
- C. Replace the worn-out cells by producing identical cells
- D. Maintain the diploid number of chromosomes in zygote
Explanation
The main purpose of meiosis in sexually reproducing organisms is to produce haploid gametes. These gametes contain half the number of chromosomes, ensuring that when they fuse to form a zygote, the diploid number is restored. This maintains genetic stability across generations. Other options are incorrect as they describe either mitosis or secondary effects of meiosis, not its primary purpose.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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