Mitosis Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle.
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Transcript of Mitosis Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle.
![Page 1: Mitosis Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle.](https://reader035.fdocuments.us/reader035/viewer/2022062407/56649e355503460f94b23a6e/html5/thumbnails/1.jpg)
MitosisClick on the hyperlink above to watch a tutorial of
the cell cycle
![Page 2: Mitosis Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle.](https://reader035.fdocuments.us/reader035/viewer/2022062407/56649e355503460f94b23a6e/html5/thumbnails/2.jpg)
Critical Check Points in the Cell Cycle
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Chromosome Duplication Kinetochore
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The Phases
Interphase
TelophaseAnaphase
Metaphase
Prometaphase
Prophase
Cytokinesis
![Page 5: Mitosis Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle.](https://reader035.fdocuments.us/reader035/viewer/2022062407/56649e355503460f94b23a6e/html5/thumbnails/5.jpg)
Mitosis Tutorial
Click on the hyperlink above- Watch the narration of mitosis- Complete the step through version of mitosis- Complete the quiz after the tutorial
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Interphase• period of cell growth and metabolic activity• DNA is duplicated, but exists as chromatin• organelles have been replicated• G1, S, and G2 subphases
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Prophase• chromatin condenses and forms chromosomes• mitotic spindle (microtubules) forms from
centrosomes• centrosomes contain centrioles in animal cells
Interphase
Prophase
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Prometaphase
• nuclear envelope breaks down• spindle fibers attach to chromosomes at a
structure called a kinetochore- protein structure that assembles the
centromere• spindle fibers begin to move chromosomes
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Metaphase
• chromosomes have been aligned in the middle of the cell (metaphase plate)
• centromeres are lined up Metaphase
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Anaphase
• sister chromatids of each chromosome are separated
• spindle fibers pull the sister chromatids apart• some spindle fibers act to elongate the cell
Anaphase
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Telophase• cell elongation continues• nuclear envelopes reform around each set of
chromosomes• chromosomes uncoil• mitotic spindle disappears
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Cytokinesis• division of the cytoplasm• two genetically identical daughter cells are
formed• resulting daughter cells are diploid
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Animal and Plant Cell Mitosis
Animal Cell• have centrosomes and
centrioles which generate the mitotic spindle
• cell membrane pinches inward during cytokinesis dividing the two cells (cleavage furrow)
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Animal and Plant Cell Mitosis
• only have centrosomes
• cell plate forms during cytokinesis
• vesicles carrying cell membrane and wall components are transported to the midline
- vesicles fuse forming the new cell membrane and
wall
Plant Cell
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Cell Plate Formation