Mitosis

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Prophase

  • DNA in nucleus condenses.
  • Chromosomes visible as sister chromatids joined by the centromere.
  • Nuclear membrane disintegrates.
  • Spindle apparatus forms.
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Metaphase

  • Centromeres line up along the equator of the cell.
  • Spindle fibres attach to the chromosomes and pull them apart at the centromeres.
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Anaphase

  • Spindle fibres shorten, pulling the chromosomes to the poles.
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Telophase

  • When the chromosomes reach opposite poles the nuclei reform around them.
  • Spindle apparatus disappears.
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