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Mitosis
cells
Definition | |
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INTERPHASE | Chromosomes are copied (# doubles) • Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy (sister chromosome) change to sister chromatids at end of this phase |
PROPHASE | Mitosis begins (cell begins to divide) • Centrioles (or poles) appear and begin to move to opposite ends of cell • Spindle fibers form between the poles |
METAPHASE | Chromatids (or pairs of chromosomes) attach to the spindle fibers |
ANAPHASE | Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell |
CYTOKINESIS | Cell membrane moves inward to create two daughter cells - each with its own nucleus with identical chromosomes |
TELOPHASE | Two new nuclei form • Chromosomes appear as chromatin (threads rather than rods) • Mitosis ends |