Cell Cycle By: Hunter Sanderson

Stage 1: Interphase The cell starts to grow. The cell’s DNA replicates (exact copy). The cell prepares to divide. Fun Fact The cell spends 90% of its life in this stage. Official Definition Interphase The stage in the development of a cell following mitosis or meiosis, during which the nucleus is not dividing. In cells that will undergo further division, the DNA in the nucleus is duplicated in preparation for the next division. http://micro.magnet.fsu.edu/cells/fluorescencemitosis/interphase2large.html The American Heritage® Science Dictionary Copyright © 2002. Published by Houghton Mifflin. All rights reserved. http://emt.bu.edu/em610/em610_ol_spring_2008/yanti/interphase_text.JPG

Mitosis has four phases: Stage 2: Mitosis Mitosis has four phases: Prophase Metaphase Anaphase Telophase Official Definition Mitosis prophase metaphase anaphase telophase Compare meiosis a method of cell division, in which the nucleus divides into daughter nuclei, each containing the same number of chromosomes as the parent nucleus Collins English Dictionary - Complete & Unabridged 10th Edition 2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009 http://www.animalgenome.org/edu/genetics/mit.gif

Prophase The nuclear membrane and the nucleolus disappear Spindle fibers appear (ropes) Start to see duplicated chromosomes Official Definition Prophase: The first stage of mitosis, during which the chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle apparatus forms at opposite poles of the cell The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. http://www.ivy-rose.co.uk/HumanBody/Cells/Cell-Division_Mitosis-Diagram.php http://www.karlloren.com/biopsy/p66.htm

Metaphase The chromosomes duplicate and move to the middle. It has sister chromatids on either side. Official Definition Metaphase: biology prophase anaphase See also telophase the second stage of mitosis during which the condensed chromosomes attach to the centre of the spindle Collins English Dictionary - Complete & Unabridged 10th Edition 2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009 http://www.biol.wwu.edu/biology/bionews.shtml http://www.ivy-rose.co.uk/HumanBody/Cells/Cell-Division_Mitosis-Diagram.php

The sister chromatids separate and move to opposite ends. Anaphase The sister chromatids separate and move to opposite ends. Official Definition Anaphase: n. The stage of mitosis and meiosis in which the chromosomes move from the equatorial plate toward opposite ends of the nuclear spindle. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. http://morganterhune3a.edublogs.org/files/2011/11/anaphase-q9m62s.jpg http://micro.magnet.fsu.edu/cells/fluorescencemitosis/anaphase3large.html http://www.visualphotos.com/image/1x7606464/meiosis_in_lilium_anther_anaphase_i_1000_x_optical

Telophase The nuclear membrane and the nucleolus reappear The chromosomes loosen up and become chromatids Telophase: prophase metaphase See also anaphase the final stage of mitosis, during which a set of chromosomes is present at each end of the cell and a nuclear membrane forms around each, producing two new nuclei Collins English Dictionary - Complete & Unabridged 10th Edition 2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009 http://bi.iboss.com/bi.gif?fn=students&fp=2&ip=10.11.43.63&ibip=10.11.11.48&ldu=0&re=1&bu=img.sparknotes.com/figures/D/d756b5b73abe2974f3521a828791899f/telophase.gif&bc=Website%20contains%20prohibited%20Advertisements%20content. http://upload.wikimedia.org/wikipedia/commons/e/e1/Telophase_in_Animal_Cell.jpg

In cytokinesis the cytoplasm divides. Stage 3: Cytokinesis In cytokinesis the cytoplasm divides. Official Definition Cytokinesis: division of the cytoplasm of a cell, occurring at the end of mitosis or meiosis Collins English Dictionary - Complete & Unabridged 10th Edition 2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009 http://iws.collin.edu/biopage/faculty/mcculloch/1406/notes/mitosis/Images/Cytokinesis%20SEM.jpg http://essayweb.net/biology/images/celldivision/cytokinesis.png

Cell Division Table Stage 2: Mitosis Stage 1: Interphase Stages What happens? Stage 1: Interphase The cell grows, DNA replicates, & the cell prepares to divide Stage 2: Mitosis Prophase The nuclear membrane & nucleus disappear Metaphase The chromosomes duplicate and move to the middle Anaphase The sister chromatids separate and move to either side Telophase The nuclear membrane and the nucleus reappear Stage 3: Cytokinesis The cytoplasm divides