V2EX mitosis

Mitosis

定义 Definition

有丝分裂:真核细胞分裂的一种方式,使一个母细胞复制并平均分配染色体,最终产生两个遗传物质几乎完全相同的子细胞(主要用于生长、修复与无性繁殖)。也常与“减数分裂(meiosis)”相对。

发音 Pronunciation (IPA)

/matoss/

例句 Examples

Mitosis helps your body grow and heal.
有丝分裂帮助你的身体生长和愈合。

After DNA replication, the cell enters mitosis, carefully separating duplicated chromosomes into two nuclei before it divides.
在 DNA 复制之后,细胞进入有丝分裂,在分裂前将复制的染色体精确地分离到两个细胞核中。

词源 Etymology

mitosis 来自希腊语 mitos(意为“线、线团”),因为在显微镜下观察时,染色体在分裂过程中呈现出线状形态;后缀 -osis 常用于表示“过程/状态”。该术语在 19 世纪细胞学发展时期被科学界固定使用。

相关词 Related Words

文学与著作 Literary Works

  • Campbell Biology(《坎贝尔生物学》):在细胞周期与细胞分裂章节中系统讲解 mitosis 的阶段与调控。
  • Molecular Biology of the Cell(《细胞的分子生物学》):以分子机制与实验视角讨论有丝分裂纺锤体、染色体分离等。
  • The Selfish Gene(Richard Dawkins,《自私的基因》):在阐释基因复制与遗传信息传递时,会提及细胞分裂(包括 mitosis)作为基础背景。
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