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Unformatted text preview: Many of the events in telophase are the reverse of prophase. The chromosomes uncoil, the nuclear membranes around daughter nuclei appear, the spindle apparatus breaks down, and the nucleolus reappears. Cytokinesis is completed as telophase ends. Interphase This is the non-dividing phase. During interphase, the nucleus is visible and the chromosomes are uncoiled and invisible. Interphase includes G 1 , S and G 2 . G 1 Each chromosome has one chromatid. The cell grows in size. Synthesis of organelles occurs. S This is when DNA synthesis occurs. G 2 Each chromosome has two chromatids. 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...
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