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Mitosis
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= division of the nucleus and its contents
Mitosis = division of the nucleus and its contents - discovered by Walther Flemming in 1882
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Phases of Mitosis
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1) Prophase - DNA coils to become chromosomes
- nuclear membrane disappears - microtubules called spindle fibers grow from centrioles to center of cell
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Prophase Centrioles Nucleus with Chromosomes Spindle Fibers
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Late Prophase Kinetochore Fibers Polar Fibers
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2) Metaphase - chromosomes line up in center
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Metaphase
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3) Anaphase - chromosomes pull apart and move to opposite sides of cell
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Anaphase
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4) Telophase - chromosomes uncoil - nuclear membrane reforms
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Telophase Chromosomes Uncoil New Nuclear Membrane Forms
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Phases of Mitosis
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How do you remember the order of the phases of Mitosis?
Just remember this phrase……….
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PMAT PEE MATT P = Prophase M = Metaphase A = Anaphase T = Telophase
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Cytokinesis - cell membrane forms a cleavage furrow and cytoplasm divides - in plants, a cell plate forms between each cell
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Cytokinesis Cleavage Furrow
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