Nuclear division: Difference between revisions
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Nuclear division is the division of the [[Nucleus|nucleus]] occuring in both [[Mitosis|mitosis]] and [[Meiosis|meiosis]] during [[Cell division|cell division]]. In mitosis nuclear division only occurs once to produce two daughter cells genetically identical to each other. Nuclear division occures twice during meiosis as four [[Haploid|haploid]] [[Gametes|gametes]] are produced; each of which are genetically different from each other. In both processes the [[Nuclear envelope|nuclear envelope]] is fragmented and completley broken down into small [[Vesicles|vesicles]] during [[Prophase|prophase]], to allow the [[Chromosomes|chromosomes]] to segregate. The nuclear envelope then begins to reform during [[Telophase|telophase]] within the daughter cells. This process involves vesicles of nuclear membrane fusing together around the chromosomes, to form the nuclear envelope and [[Nuclear lamina|nuclear lamina]].. The reformation of the two new nuclei marks the end of nuclear division.<ref>Bruce Alberts. Essential cell biology,.3rd Edition (2009)New York : Garland Science</ref> | |||
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Latest revision as of 01:37, 29 November 2013
Nuclear division is the division of the nucleus occuring in both mitosis and meiosis during cell division. In mitosis nuclear division only occurs once to produce two daughter cells genetically identical to each other. Nuclear division occures twice during meiosis as four haploid gametes are produced; each of which are genetically different from each other. In both processes the nuclear envelope is fragmented and completley broken down into small vesicles during prophase, to allow the chromosomes to segregate. The nuclear envelope then begins to reform during telophase within the daughter cells. This process involves vesicles of nuclear membrane fusing together around the chromosomes, to form the nuclear envelope and nuclear lamina.. The reformation of the two new nuclei marks the end of nuclear division.[1]
References
- ↑ Bruce Alberts. Essential cell biology,.3rd Edition (2009)New York : Garland Science