B2: Mitosis and meiosis

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  • Cell division: Mitosis and meiosis
    • Mitosis
      • This cell division produces two genetically identical cells
        • Each new cell contains the same number of chromosomes as the original cell.
      • Needed to make new cells for growth of the body
      • Needed to make new cells to replace those that have been damaged
      • Make new cells to replace those that have worn out
      • New cells are genetically identical to mother cell
    • Meiosis
      • This cell division produces 4 genetically different gametes (sperm or eggs)
        • Contains half the normal number of chromosomes
      • New cells genetically different to mother cell


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