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What goes on in each stage of mitosis?

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monkeyhead | Student, College Freshman | eNotes Newbie

Posted April 18, 2010 at 12:48 PM via web

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What goes on in each stage of mitosis?

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ako6777 | Middle School Teacher | (Level 1) Associate Educator

Posted April 19, 2010 at 6:55 AM (Answer #1)

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There are 6 stages of mitosis:

  1. Interphase-DNA has replicated, but has not formed the condensed structure of chromosome.
  2. Prophase-DNA molecules progressivly shorten by coiling, to form chromosomes.
  3. Metaphase-the spindle fibres attach themselves to the centromeres of the chromosomes and align the chromosomes at the equatorial plate.
  4. Anaphase-the spindle fibres shorten and the centromere splits, separated sister chromatids are pulled along behind the centromeres.
  5. Telophase-the chromosomes reach the poles of their respective spindles. Nuclear envelope reform before the chromosomes uncoil. The spindle fibres disintegrate.
  6. Cytokinasis-the process of splitting the daughter cells apart. A furrow forms and the cell is pinched in two. Each daughter cell contains the same number and same quality of chromosomes.

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