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series of events that takes place from one cell division to the next |
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"period of growth and development; hereditary material (DNA, chromosomes) is copied and the cell prepares for division during interphase." |
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"nuclear membrane disintegrates; centrioles move to opposite ends of the cell. Between the centrioles, spindle fibers begin to stretch across the cell" |
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pairs of chromatids line up across the center of the cell. The centromere of each pair attaches to two spindle fibers - one from each side of the cell |
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"centromere divides and the spindle fibers shorten. Each pair of chromatids separates, and chromatids begin to move to opposite ends of the cell. The separated chromatids are now called chromosomes" |
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"spindle fibers start to disappear the chromosomes start to uncoil, and a new nucleus forms." |
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the process in which the nucleus divides to form two identical nuclei. Each new nucleus also is identical to the original nucleus |
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a structure in the nucleus that contains hereditary material |
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"chromosome coiled tightly into two thickened, identical strands" |
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"the cytoplasm separates and two new cells are formed. In animal cells, the cell membrane pinches in the middle, and the cytoplasm divides. In plant cells cell walls form along the cell plate, and new cell membranes develop inside the cell walls." |
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