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Published byWalter Richards Modified over 9 years ago
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Mitosis By: Tim Goudemont
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What is Mitosis? Mitosis is a process where a single cell divides into two identical daughter cells (cell division). But the major purpose of mitosis is for growth and to replace worn out cells.
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Interphase The cell grows to its grown up size, then it makes a copy of the DNA. Once it copied, it makes it ready to divide it into two cells. DNA is copied because the two daughter cells have to be identical.
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Prophase The nucleolus disappears during prophase. Chromosomes become more coiled and can be viewed under a light microscope. The nuclear envelope disappears at the end of prophase. The chromosomes become coiled because it is easier to transfer it if it’s really long.
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Metaphase The centrosomes are at opposite poles of the cell. The chromosomes, now at their most highly coiled and condensed The chromosomes are at The equator (in the middle).
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Anaphase Anaphase begins when the duplicated centromeres of each pair of sister chromatids separate, and the now-daughter chromosomes begin moving toward opposite poles of the cell. At the end of anaphase, a complete set of chromosomes has assembled at each pole of the cell.
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Telophase The chromosomes begin to uncoil and eventually assume the extended state characteristic of interphase. A nuclear envelope reforms around each chromosome set, the spindle disappears, and the nucleolus reforms. Nuclear division by mitosis is complete at this point.
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Cytokinesis The cell membrane pinches in around the middle of the cell. The cell breaks apart in two cells. Each daughter cell ends up with the same set of chromosomes
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