Cell divison - mitosis

Cell divison - mitosisSchematic of the mitosis of a eukaryotic nucleus.I: initiale Prophase
The centrioles are together and the chromosomes condense or have condensed.

II: Prophase
The centrioles divide and the nucleolus disappears.

III: Prometaphase
The nuclear membrane begins to break down (signifies prometaphase, here not yet pictured) and the kinetochore and polar microtubules form.
IV: Metaphase
The chromosomes are maximally condensed. They begin to line up along the metaphase plate (imaginary equatorial plane). The microtubules are fully formed.

V+VI: Anaphase
The sister chromatids seperate and move towards the opposite poles of the cell.
VII+VIII: Telophase
New nucleotide membranes form and nucleoli appear. The chromosomes unwind and at the end rRNA production starts up again.