Mitosis

Mitosis

▪Mitosis is nuclear division that produces two genetically identical daughter nuclei, each containing the same number of chromosomes as the parent nucleus.

▪Mitosis a controlled process

Interphase

▪Interphase has G1, S and G2

Prophase 

  • the chromosomes condense shorter.
  • the centrioles move to opposite ends of the cell which form a network of protein fibres it called spindle.
  • the nuclear envelope breaks down.

Metaphase

  • the chromosomes line up along the middle of the cell attached to the spindle by their centromere.

Anaphase 

  • centromere divide which causes the separation of the sister chromatids.
  • the spindles contract moving the chromatids to opposite poles of the spindle.

telophase 

  • once the chromatids move to opposite poles of the spindle – these uncoil.
  • A nuclear envelope forms around the chromosomes and these become two daughter cells which are genetically identical to the original cell.

 

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