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Mitosis - Coggle Diagram
Mitosis
Prophase
Events during the stage
Chromosomes have replicated during the S phase of interphase
Consist of two identical sister chromatids
Shorten and thicken as DNA supercoils
Nuclear envelope breaks down
Centriole in animal cells divides
Daughter centrioles move to opposite poles of the cell
Cytoskeleton protein (tubulin) threads form a spindle between these centrioles
Spinde has a 3D structure and is like lines of latitude on a virtual globe
In plants cells, tubulin threads are formed from the cytoplasm
Metaphase
Events during the stage
Pairs of chromatids attach to the spindle threads at the equator region
Chromatids attach by their centromeres
Anaphase
Events during the stage
Centromere of each pair of chromatids splits
Motor proteins pull each sister chromatid of a pair in opposite directions towards opposite poles
Motor proteins walk along the tubulin threads
Chromatids, now called chromosomes, assume a V shape
This is because their centromere goes first
Telophase
Events during the stage
Separated chromosomes reach the poles
A new nuclear envelope forms around each set of chromosomes
Cell contains two nuclei
Genetically identical to
Each other
The parent cell
Cytokinesis
End of mitosis
Animal cell
Plasma membrane folds inwards and 'nips in' the cytoplasm
Plant cell
End plate forms where the equator of the spindle was
New plasma and cellulose cell wall materials are laid down on either side along this end plate