1 1 Mitosis Mitosis is the process in which the nucleus divides to form two new nuclei. What disease...
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MitosisMitosis is the process in
which the nucleus divides to form two new nuclei. What disease is mitosis gone wild?
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Mitosis is the process in which the nucleus divides to form two new nuclei. What disease is mitosis gone wild?
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Mitosis is the process in which the nucleus divides to form two new nuclei. What disease is mitosis gone wild?
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Mitosis is the process in which the nucleus divides to form two new nuclei. What disease is mitosis gone wild?
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Mitosis is the process in which the nucleus divides to form two new nuclei. What disease is mitosis gone wild?
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CANCERIn cancer, cells divide and grow uncontrollably,
forming malignant tumors, and invade nearby parts of the body.
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Video Video 2
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How do little elephants grow up to be BIG elephants?
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Your life begins after a sperm fertilizes an egg, and you are
smaller than a period in a newspaper.
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Animal Mitosis -- preview
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokineses
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Animated Mitosis Cyclehttp://www.cellsalive.com/mitosis.htm
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase
• Cytokinesis
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• Chromosomes are replicated (amount of DNA doubles)
• Chromosomes appear as threadlike coils (chromatin)
CELL MEMBRANENucleus
Cytoplasm
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Chromatin condenses into chromosomes• Centrioles (or poles) appear and begin to
move to opposite end of the cell of animal cells.
• Spindle fibers form from centrioles.Centrioles
Sister chromatids
Spindle fibers
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Spindle fibers
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• Chromosomes line up along the metaphase plate
• Spindle fibers attach to the centromeres of each chromosome
Centrioles
Spindle fibers
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Sister chromatids pulled apart by shortening spindle fibers.
Centrioles
Spindle fibers
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Nuclear membranes form around chromosomes.
• Mitosis ends.
NucleiNuclei
Chromatin
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.
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Plant Mitosis -- ReviewInterphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
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IInterphase PProphase MMetaphase AAnaphase TTelophase CCytokinesis
II PPayay MMoney oney AAtt TThe he CCashierashier
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Confused? Here are links to fun resources that
further explain mitosis:
Mitosis Main Page on the Virtual Cell Biology
Classroom of Science Prof Online.
“Imitosis” music video by Andrew Bird.
DNA Replication step-through animation by John Kyrk.
Mitosis & Cytokinesis animated video by McGraw-Hill.
Mitosis animation, step-through and quiz, Sadava, et al., Life: The Science of Biology, 9th Edition, Sinauer Associates.
Mitosis step through animation from CellsAlive.com.
“That Spells DNA” song by Jonathan Coulton.
(You must be in PPT slideshow view to click on links.)
From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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