What are chromosomes? Explain how in sexually reproducing organisms,the number of chromosomes in the progeny is maintained?
(N/A) Chromosomes are thread-like structures composed of $DNA$ and proteins,found within the nucleus of a cell.
In sexually reproducing organisms,the process of meiosis occurs during gamete formation. This process reduces the number of chromosomes to half $(n)$ in the gametes compared to the parent cell $(2n)$.
When fertilization occurs,the male gamete $(n)$ and the female gamete $(n)$ fuse to form a zygote $(2n)$. This fusion restores the original diploid number of chromosomes in the progeny,ensuring the stability of the species across generations.
In sexually reproducing organisms,the process of meiosis occurs during gamete formation. This process reduces the number of chromosomes to half $(n)$ in the gametes compared to the parent cell $(2n)$.
When fertilization occurs,the male gamete $(n)$ and the female gamete $(n)$ fuse to form a zygote $(2n)$. This fusion restores the original diploid number of chromosomes in the progeny,ensuring the stability of the species across generations.
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