Before mitosis begins, chromosomes are copied. Each chromosome becomes two chromatids.
Mitosis begins. Chromosomes condense from long strands into rodlike structures.
The nuclear membrane is dissolved. Paired chromatids align at the cell's equator.
The paired chromatids separate and move to opposite sides of the cell.
A nuclear membrane forms around each set of chromosomes, and the chromosomes decondense. Mitosis is complete.
In a cell that lacks the cell wall, the cell pinches in two. In a cell that has a cell wall, a cell plate forms and separates the cells into two new cells.
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