Cell Cycle

http://alevelnotes.com/content_images/i77_dwa_1_mitosis.gif

Interphase

• 90% of cell life in this stage• grows• DNA replicates (exact copy)• prepares to divide

http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20101/bio%20101%20lectures/mitosis/whitefish_mitosis_interphase_X_400_small.jpg http://local.brookings.k12.sd.us/biology/images/mitosis-animated.gif

Mitosis

This stage has four stages within itself. These stages are: • Prophase • Metaphase• Anaphase• Telophase

http://img.tfd.com/dorland/thumbs/mitosis.jpg

Prophase

http://www.microscopy-uk.org.uk/mag/imgnov04macro/prophase.jpg http://www.monteweston.com/Biology/Bio/label41.jpg

• nuclear membrane and nucleolus disappear• spindle fibers (ropes) appear• see duplicated chromosomes

Metaphase

http://www.clker.com/cliparts/b/d/e/f/12641392951083079626Metaphase_procariotic_mitosis.svg.hi.pnghttp://student.ccbcmd.edu/~gkaiser/biotutorials/dna/mitosis/images/metaphase1_pc.jpg

• Duplicative chromosomes• Sister chromatids on either sides

Anaphase

• sister chromatids separate • move to opposite sides

http://thumbs.dreamstime.com/thumblarge_448/12567407355rx4OM.jpghttp://www2.sunysuffolk.edu/gambier/micrographs/anaphaseI2.JPG

Telophase

• nuclear membrane and nucleolus reappear• chromosomes loosen up and become chromatin

http://www.baileybio.com/plogger/thumbs/lrg-207-telophase_-_animal_cell__whitefish_blastula_.jpg

http://www.phschool.com/science/biology_place/biocoach/images/meiosis/metel1.gif

Cytokensis

• division of cytoplasm• always moving to the next stage

http://www.biologycorner.com/resources/cytokinesis.gifhttp://botit.botany.wisc.edu/Resources/Botany/Mitosis/Allium/telophase%20cytokinesis.jpg

Cell Cycle SummaryInterphase DNA makes an exact copy of itself and prepares to divide.

Mitosis Prophase Nuclear membrane & nucleolus disappear and spindle fibers appear.

Metaphase Duplicative chromosomes with sister chromatids on either sides.

Anaphase Sister chromatids separate and move to opposite ends.

Telophase Nuclear membrane and nucleolus reappear and chromosomes loosen up and become chromatin.

Cytokensis Division of cytoplasm.