3.23 understand that division of a diploid cell by mitosis produces two cells which contain identical sets of chromosomes

Mitosis – cell division resulting in two, genetically identical diploid daughter cells.

  • All cells of the body (except from sex cells) are formed by mitosis from the zygote
  • In mitosis, each copy of each chromosome is made before the cell divides.
  • During the division, each daughter cell receives a copy of each chromosome


  • Mitosis is important for the replacement of cells.
  • Eg. skin cells, gut cells and blood cells.
  • In cancer, the normal control of mitosis is lost, so the cells divide very rapidly and repeatedly.



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