Chromosomes not visible. Chromosomes condense, become visible. Spindle starts to form between the centrosomes. Spindle formed, with centro- somes at opposite poles. Nuclear membrane dissolves.
Chromosomes start to attach to spindle at their centromeres.
Chromosomes line up on spindle in center of cell. Centromeres split apart. Then chromosomes move to towards centrosomes at opposite poles of cell. Nuclear membrane reforms. Cell pinches into 2 cells in animals.