Cell Division bio notes - Cell Division 2008-09-19 Mitosis...

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Cell Division 13:30 Mitosis Centromere- central where sister chromatids connect Centrosome Interphase (g2) Normal phase of cell 2 centrosomes, 2 pairs of centrioles Prophase DNA, chromosomes become visible Nuclear envelope still in tact Prometaphase Nuclear envelope dissolves Chromosomes becoming more and more distinct and condensed Centrosomes moved to opposite ends of cell Kineticore o Protein at middle of chromosome o Site where microtubules attach to chromosomes Metaphase o Longest part of mitosis o Chromosomes aligning at midcell o Microtubules connecting at kineticores o Chromosomes align at metaphase plate o Sister chromatids Anaphase o Sister chromatids pulled apart Different sides of cell
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Telophase (and cytokinesis) o Separation o Nuclear envelopes come back o Cytokinesis: Cleavage of cytoplasm “draw string in sweatpants” o Watch video- time lapse
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Cell Division bio notes - Cell Division 2008-09-19 Mitosis...

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