mitosis

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  • mitosis
    • cells divide in a series of stages
      • the genetic material is doubled
        • then divided into 2 identical cells
    • stage 1
      • growth
        • increase the sub-cellular structures
          • e.g. ribosomes mitochondria
    • stage 2
      • DNA synthesis
        • DNA replicates to form 2 copies of each chromosome
    • stage 3
      • mitosis
        • one set of chromosomes is pulled to each end of the cell and the nucleus divides
          • cytoplasm and cell membranes divide to form 2 identical cells
            • identical to the parent cell
    • mitosis occurs during:
      • growth
      • repair
      • replacement of cells
    • asexual reproduction occurs via mitosis in plants and simple animals

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