An actively dividing cell follows a definite sequence of events as it reproduces. The three principal processes involved in cell reproduction are replication of the genetic material, division of the nucleus to form two genetically-identical daughter nuclei, and division of the cytoplasm to form two daughter cells. These processes are sometimes collectively referred to as the cell cycle.

The links below will allow you to review the features of each stage in the cell cycle, using photomicrographs of actively dividing onion root tip cells for illustration:
 

Stages of the Cell Cycle Interphase Prophase Metaphase Anaphase Telophase

This page last updated: 13 Sep 1999