First phase of Mitosis. The chromatin fibers become more tightly coiled - condensing into discrete chromosomes observable with a light microscope. Nucleoli disappear. Each duplicated chromosome appears as two identical sister chromatids joined togeth

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1. First phase of Mitosis. The chromatin fibers become more tightly coiled - condensing into discrete chromosomes observable with a light microscope. Nucleoli disappear. Each duplicated chromosome appears as two identical sister chromatids joined togeth