Mitosis--which is a continuous process occurring in five stages: prophase, prometaphase, metaphase, anaphase, and telophase--is the heterogeneous of the nucleus. During prophase, changes occur in the cytoplasm and the nucleus of the cadre. Basically, in the nucleus, chromatin granule fibers become more tightly coiled-up, condensing into discrete chromosomes. Also, the nucleoli disappear. from each one duplicated chromosome appears as dickens identical infant chromatids join together. Mitotic empale begins to anatomy in cytoplasm (it is made of microtubules radiating from deuce centrosomes). Next is prometaphase, where the nuclear envelope surrounding the nucleus fragments. Bundles of microtubules hang on from each pole toward middle of cell. Kinetochore develops in centromere region of chromosomes. In metaphase, centrosomes are at opposite ends of the poles of the cell; the chromosomes meet on the metaphase plate. For each chromosome, the kinetochores of the infant chromatids are inclined(p) to microtubules coming from opposite poles of the cell. Entire apparatus of microtubules = spindle.
In anaphase, sister chromatids separate from each other and move toward opposite ends of the cell, as their kinetochore microtubules shorten. Thus, the two poles of the cell have equivalent and mangle collections of chromosomes. Lastly, in telophase, nonkinetochore microtubules elongate the cell still more, and daughter nuclei puzzle out at the two poles of the cell. Nuclear envelopes arise from fragments. Mitosis--the equal character of one nucleus into two genetically i dentical nuclei--is in conclusion complete.! If you want to get a full essay, mark it on our website:
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