Chromosomes and Mitosis

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  • Chromosomes and Mitosis
    • contain genetic information
      • most cells in your body have a nucleus
      • coiled up lengths of DNA molecules
    • coiled up lengths of DNA molecules
    • carry large numbers of genes
      • control the development of different characteristic traits
        • hair colour
    • body cells have two copies of each chromosome
      • one from the 'mother' and one from the 'father'
      • we have 23 pairs of chromosomes
        • the 23rd pair
          • **
            • female
          • XY
            • male
    • the cell cycle
    • the cell cycle
      • divide to produce new cells
      • the stage where the cell divides
        • mitosis
          • grow and replace cells that have been damaged
          • two new cells identical to the original cell
          • Interphase - the DNA replicates to prepare for mitosis
            • Prophase
              • Metaphase
                • Anaphase
                  • Telophase
                    • Cytokenesis
          • Before the cell divides the cell has to grow and increase the amount of subcellular structures such as mitochondria and ribosomes
            • duplicates DNA
              • DNA is copied and forms X-shaped chromosomes
                • each 'arm' is an exact duplicate of the other
              • Interphase - the DNA replicates to prepare for mitosis
                • Prophase
                  • Metaphase
                    • Anaphase
                      • Telophase
                        • Cytokenesis
    • the stage where the cell divides
      • mitosis
        • grow and replace cells that have been damaged
        • two new cells identical to the original cell
        • Before the cell divides the cell has to grow and increase the amount of subcellular structures such as mitochondria and ribosomes
          • duplicates DNA
            • DNA is copied and forms X-shaped chromosomes
              • each 'arm' is an exact duplicate of the other

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