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| all cells come from pre-existing cells; a process of division forms new cells. |
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equal division of a cell that results into two daughter cells that have identical genetic information
the type of cell division that maintains the chromosome set of original cell in the generation of cells |
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| increase cell number. the most common form of cell division. |
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| another type of nuclear cell division and only occurs in germ-like cells; produces 4 daughter cells; the chromosome number of meiotic daughter cells is one-half that found in the parent cell. |
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| genetic material is in a diffused form called chromatin; unduplicated chromosomes |
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| chromatin condenses into visable chromosomes; the two pairs of centrioles separate and migrate to the opposite sides of the nucleus; splinder fibers begin to form and nuclear envelop begins to disappear. |
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| chromosomes are lined up at the equator due to being pulled and dragged by the spindle microtubules |
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| sister chromosomes separate and migrate to opposite poles |
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| begins when the daughter chromosomes/chromatids reach their respective poles; the spindle fibers disappear, nuclear envelops are reformed and the chromosomes decondense to form chromatin. |
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| usually occurs at telophase of mitosis progresses. |
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| consists of two phases and results in 4 haploid cells |
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| replicates the chromatids as in mitosis so that there are two chromosomes each of which has two chromotids joined at the centromeres |
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| chromosomes condense, nuclear envelop begins to disapear, and centrioles migrate; now homologous chromosomes join at their centromeres; genes are exchanged during crossing-over |
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| the swapping of genetic material between homologous chromosomes |
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| chromosome arms untwine, but tetrad remains; continuation in condensing and reaching their max. compaction |
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| homologous chromosome pairs separate and travel to opposite poles; the original centromeres remain attached |
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| begins when each chromosome reaches its perspective pole; a second centriole duplication takes place at the end |
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| there's no S-phase; no G1 or G2 b/c they are defined by the occurrence of the S-phase. all that is required is the split the centromeres and separate the chromatids; time difference |
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| centrioles migrate to opposite poles; nuclear envelop will disintegrate and the chromatid will condense into chromosome. |
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| the chromosomes will line up at the equator; b/c no homologous is present, each replicated chromosome acts independently of all other chromosome |
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| nuclear envelop reforms;spindle fibers disappear; chromosomes decondense into chromatinand cytokinesis occurs |
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