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English: A diagram of mitosis stages Interphase (G₂): In this substage, the cell prepares for nuclear division and a protein that makes microtubles for cell division is synthesized. Prophase: The longest stage of mitosis. In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell.
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The function or significance of mitosis, is the maintenance of the chromosomal set; each formed cell receives chromosomes that are alike in composition and equal in number to the chromosomes of the parent cell. Mitosis occurs in the following circumstances: Development and growth: The number of cells within an organism increases by mitosis.
A diagram of the mitotic phases. Mitosis is the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets in two nuclei. [8] During the process of mitosis the pairs of chromosomes condense and attach to microtubules that pull the sister chromatids to opposite sides of the cell. [9]
When the progesterone level is high enough, the Mos curve is shifted higher and ultimately intersects the degradation line at only one point, so there is only one stable “on” state, indicating the entrance into mitosis. The irreversibility we see in the Mitosis transition point comes from having high enough levels of progesterone in the cell.
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The following other wikis use this file: Usage on af.wikipedia.org Mitose; Usage on ar.wikipedia.org دورة الخلية; انقسام متساو
Stages of early mitosis in a vertebrate cell with micrographs of chromatids Metaphase (from Ancient Greek μετα- ( meta- ) beyond, above, transcending and from Ancient Greek φάσις (phásis) 'appearance') is a stage of mitosis in the eukaryotic cell cycle in which chromosomes are at their second-most condensed and coiled stage (they are ...