Mitosis is part of a larger process called the cell cycle.
When a living organism needs new cells to repair damage, grow, or just maintain its condition, cells undergo the cell cycle. In this lab you are going to determine the approximate time it takes for a cell to pass through each of the four stages of mitosis. You may use your textbook and class notes to help you identify the stages of mitosis as seen under the microscope. Place a slide containing a stained preparation of the onion root tip. Locate the meristematic zone, which is just above the root cap at the very end of the tip.