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Name ________Key__________________________ Subject __________________, Period ____ Texas High School Date ____________ Teacher __________________ Prelab Worksheet – The Great Divide Interphase Extra proteins, enzymes and other cell parts are made Cell growth Centrioles duplicate and form 2 pair Chromosomes replicate Prophase Nuclear membrane disappears Metaphase Centromeres line up in center of cell Anaphase Spindle fibers pull chromatids apart Telophase Spindles disappear Cytokinesis occurs Centrioles move to opposite Chromosomes attach to sides of cell spindle fibers Spindle fibers form Centromere connects 2 halves of double chromosome Chromosomes thicken and become visible Longest phase Chromosomes reach opposite ends of cell Each cell has 2 identical sets of single chromosomes Shortest phase Cell furrow or plate forms and cells divide Nuclear membrane reforms
