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EXPLAINING MITOSIS AND MITOSIS
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229 回視聴29高評価1:40:58benjaminthewiseguy5006元のリリース: 2026-05-02

Mitosis is the process by which somatic body cells divide to produce two genetically identical daughter cells, essential for growth, tissue repair, and cell replacement, while meiosis is the specialized cell division that occurs in sperm and egg cells to produce four genetically unique haploid cells (23 chromosomes each) for sexual reproduction; chromosomal syndromes like Down syndrome (trisomy 21) and Klinefelter syndrome arise from errors during meiosis, particularly nondisjunction where chromosomes fail to separate properly, resulting in gametes with abnormal chromosome numbers that, when combined with normal gametes, produce offspring with extra or missing chromosomes.

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