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Mitosis

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					  Mitosis
Cell division
Cell division
All complex organisms
originated from a single
fertilised egg.
Every cell in your body
started here, through cell
division the numbers are
increased
Cell then specialise and
change into their various
roles
                   Mitosis
• Mitosis is the process by which new body
  cell are produced for:
  – Growth
  – Replacing damaged or old cells.

  This is a complex process requiring different
   stages
Parent cell


Chromosomes are
copied and double
in number


Chromosomes
now split


2 daughter cells
identical to original
                  Mitosis
• All daughter cells contain the same genetic
  information from the original parent cell from
  which it was copied.

• Every different type cell in your body
  contains the same genes, but only some act to
  make the cells specialise – e.g. into nerve or
  muscle tissue.
        Mitosis – bone cell slides
 1                  2


                                           Cells
  Parent cell           Chromosomes        split
                        copied
 3                  4                 5




Copies separating                     2 daughter cells
 Plants

 apical
meristem
Rat – epithelial cells
Cell membrane
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posted:2/4/2013
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