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Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
Mitosis Final
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Mitosis Final

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mitosis notes

mitosis notes

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Transcript

  • 1. Mitosis Chapter 10
  • 2. Depending on cell type…
    • Mitosis can take a few minutes or a few days
    • Muscle cells
    • Nerve cells
    • Skin cells
    • Digestive Tract cells
  • 3. Prophase
    • 50-60% of time
    • Chromosomes become visible
    • Centrioles develop in cytoplasm near nuclear envelope
    • Centrioles separate and migrate to opposite ends of nuc. Env.
    • Centrosome
      • Region where Centrioles are found
      • Organize the “spindle”
        • Fan like microtubule structure that helps separate chromosomes
    • Plants do NOT have Centrioles
  • 4.  
  • 5.  
  • 6. End of prophase
    • Chromosomes coil together tightly
    • Nucleolus disappears
    • Nuclear envelope breaks down
  • 7. Metaphase
    • Few minutes
    • Chromosomes line up in middle (M in metaphase  MIDDLE)
    • Microtubules connect centromere of each chromosome to the 2 poles of spindle
  • 8.  
  • 9.  
  • 10.  
  • 11. Anaphase
    • Centromeres joining sister chromatids separate and become individual chromosomes
    • They are dragged by fibers to opposite poles
    • Ends when chromosomes stop moving
  • 12.  
  • 13.  
  • 14.  
  • 15. Telophase
    • Opposite of prophase
    • Condensed chromosomes disperse into tangle of material
    • Nuclear envelope reforms
    • Spindle breaks apart
    • Nucleolus becomes visible
    • At the end  2 identical nuclei in one cell
  • 16.  
  • 17.  
  • 18.  
  • 19. Cytokinesis
    • Happens at the same time as Telophase
    • Division of cytoplasm
    • Animal Cells
      • Cell membrane drawn inward until it pinches off and forms 2 id daughter cells
    • Plant Cells
      • Cell plate forms between nuclei
      • Cell Plate develops into separate membrane
      • Cell wall appears
  • 20.  
  • 21.  
  • 22.  
  • 23.  
  • 24.  

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