What has to happen for a cell to divide? Plenty. The above image shows the mitotic spindle in a human cell. The mitotic spindle separates DNA in cells that are dividing. But that is just one step in the process. Why do you think cells need to divide? Do all cells divide the same way? How do cells help us reproduce? What would happen to living things if their cells failed to divide? What happens if cells divide uncontrollably? Think about these questions as you begin to understand why and how cells divide and how cell division helps the reproduction of all living things.
User:Afunguy/Wikipedia. commons.wikimedia.org/wiki/File:Kinetochore.jpg. Public Domain.