cell division- when cells divide into two, new cells
chromatid- one of two identical parts of a duplicated chromosome
centromere- area where the chromatids of a chromosome are attached
cell cycle- series of events that cells go through as they grow and divide
mitosis- a part of eukaryotic cell division during which the cell nuclues divides
prophase- first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the oppostie sides of the nucleus
metaphase- second phase of mitosis, during which the chromosomes line up across the center of the cell
anaphase- third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles
telophase- fourth/final stage of mitosis, during which the chromosomes begin to disperse into a tangle of dense material
centriole- one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope
cyclin- one of a family of closely related proteins that regulate the cell cycle in eukaryotic cells
cancer- disorder in which some of the body's own cells lose the ability to control growth
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