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Transcript
MITOTIC CELL DIVISION INTERPHASE = (Nondividing phase of cell cycle) Growth; Cell is doing its job Includes G1, S, G2 Nuclear envelope/nucleoli are visible DNA is less condensed as chromatin S- DNA makes copy G2- Make organelles needed for new cell (EX: Centrosomes/centrioles are copied ) PROPHASE (1st dividing phase) Chromatin condenses; Chromosomes first visible Nuclear envelope/Nucleoli disappear Centrosomes appear & move towards poles Mitotic spindle begins to form Microtubules attach to kinetochore proteins on centromeres METAPHASE (= MIDDLE) Longest phase of mitosis Chromosomes line up on metaphase plate ANAPHASE (=APART) Shortest phase of mitosis Two sister chromatids separate and chromosomes move toward poles Nonkinetochore (polar) microtubules elongate cell TELOPHASE (Two daughter nuclei visible) Also called “reverse prophase” Nuclear envelope/nucleoli return Chromosomes spread out into chromatin Spindle and centrosomes disappear CYTOKINESIS = Division of cytoplasm Underway by late telophase Animal cells-cleavage furrow; Plant cells-cell plate