Each nucleus now contains four chromosomes (two sets of two ... It can be seen in the stages shown above that mitosis maintains the chromosome number or complement of a cell.

Mitosis orchestrates eukaryotic cell division, maintaining genetic fidelity and playing a key role in development, tissue homeostasis, and cancer progression.

Mitosis ends with telophase, or the stage at which the chromosomes reach the poles. The nuclear membrane then reforms, and the chromosomes begin to decondense into their interphase conformations.

The activity on this page has been designed by educational experts to help you to understand the three stages of mitosis. Interact with the activity to see the mitosis phases and descriptions.