Mitosis--which is a continuous process occurring in five stages: prophase, prometaphase, metaphase, anaphase, and telophase--is the division of the nucleus. During prophase, changes occur in the cytoplasm and the nucleus of the cell. Basically, in the nucleus, chromatin fibers become more tightly coiled-up, condensing into discrete chromosomes. Also, the nucleoli disappear. Each duplicated chromosome appears as two identical sister chromatids join together. Mitotic spindle begins to form in cytoplasm (it is made of microtubules radiating from two centrosomes). Next is prometaphase,…
