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Home > Biology > Revision videos > Cell division

Biology

Cell division

Mitosis

Mitosis, or cell division, is a way of creating new cells in the body. In this video you’ll see real cells dividing – and the process explained in a new way, through dance and rap.

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Key learning points:

  • Mitosis is a type of cell division which allows cells to clone (or copy themselves).
  • Mitosis is essential for growth and repair.
  • There are 23 pairs of chromosomes in a normal human body cell.
  • Mitosis starts with the chromosomes making identical copies of themselves.
  • The chromosomes and their copies then line up along the central axis (equator) of the cell.
  • Spindle fibres pull the identical copies apart to opposite ends of the cell.
  • A nucleus forms around the chromosomes at each end.
  • The cell membrane pinches off to produce two daughter cells identical to each other and the parent cell.
  • The daughter cells contain exactly the same number of chromosomes as the parent cell.
  • Remember - red blood cells have no nucleus and so these are not produced by mitosis.

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