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Unformatted text preview: The synthesis of enzymes and other proteins in preparation for mitosis occurs during this period. Cells that permanently leave the cycle Some cells remain permanently in G 1 . Examples: skeletal muscle, nerve cells Some cells remain permanently in G 2 . Example: cardiac muscle Below: Whitefish blastula X 400 Mitosis in Plants Plants form a spindle apparatus as animals do but plants lack centrioles . Instead of furrowing, vesicles derived from the Golgi apparatus fuse at the equator to form a cell plate . The vesicles contain materials necessary to construct a cell wall between the cells. Mitosis in Allium (Onion)...
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