What evidence shows that mitosis is a continuous process, not a series of separate events?

All cells change at different times and not at same time, mitosis is a multi step continuous process. The cycle keeps on repeating the process do not end.

Mitosis is a process by which a cell divides in an identical daughter cells, During the process one cell divides and produce two identical cells. Mitosis is for growth and replacement of dead cells, Mistakes in mitosis can result in changes in the DNA and can lead into genetic disorders.