Mitosis

The stages of Mitosis

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  • Mitosis
    • Prophase
      • Chromosomes become visbile
        • Increasingly shorten and thicken by process supercoiling
          • Prophase ends when two chromatids are held together at the centromere
            • Metaphase
              • The centrioles move to opposites ends of the cell
                • Microtubles of the cytoplasm start to form into a spindle, emitting out from the centrioles
                  • Microtubles attach to the centromeres of each pair of chromatids, arranging at the equator of the spindle
                    • Anaphase
                      • The centromeres divide, and spindle fibres shorten, and the chromatids are pulled by their centromeres to opposite poles
                        • Now separated, the chromatids are referred to as chromosomes
                          • Telophase
                            • A nuclear membrane re-forms around both groups of chromosomes at opposite ends of the cell
                              • The chromosomes 'decondense' by uncoiling, becoming chromatids again.
                                • The nucleolus re-forms in each nucleus
                                • Interphase
            • At this time the nucleolus gradually disappears and the nuclear membrane breaks down
  • Metaphase
    • The centrioles move to opposites ends of the cell
      • Microtubles of the cytoplasm start to form into a spindle, emitting out from the centrioles
        • Microtubles attach to the centromeres of each pair of chromatids, arranging at the equator of the spindle
          • Anaphase
            • The centromeres divide, and spindle fibres shorten, and the chromatids are pulled by their centromeres to opposite poles
              • Now separated, the chromatids are referred to as chromosomes
                • Telophase
                  • A nuclear membrane re-forms around both groups of chromosomes at opposite ends of the cell
                    • The chromosomes 'decondense' by uncoiling, becoming chromatids again.
                      • The nucleolus re-forms in each nucleus
                      • Interphase

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