Stages in Mitosis

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The function of mitosis is to increase the number of cells that are genetically identical to the parent cell.

Mitosis occurs during growth,asexual reproduction and tissue repair.

Interphase - when a cell is not dividing

  •  Newly formed cell increases in size
  • Produces organelles, e.g. mitochondria.
  • The amount of DNA is doubled.
  • all ATP made for mitosis.
  • Choromosomes replicate
  • Each chromosome consistes of two chromotids joined together by the centromere.
  • Chromosomes are not visable because the chromatin is dispersed throughout the nucleus.



  • The chromosomes condense (shorten and become thicker) and become visable as long thin threads.
  • In celles where centrioles are present the centrioles divide and move to opposite ends of the cells.
  • Protein microtubules form from each centriole and the spindle developes, extending from pole…


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