Cell Division
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Created by:
teachingscience on October 18, 2007
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15 terms
Terms | Definitions |
|---|---|
 chromosome | a compact package of DNA; human cells have 46 |
| chromatid | after DNA has been copied (making an 'X'), this is one half of a chromosome; that is, one copy of the DNA |
| centromere | the area where two sister chromatids are joined |
| centriole | an organelle in animal cells which seems associated with spindle fibers in cell division |
| spindle fibers | special microtubules which grow in mitosis, connect to chromosomes, and move the chromosomes around |
| cell division | the splitting of one cell into two cells |
| cell cycle | the sequence of events in cell's "life", from the point where it is first "born" until the point where it divides |
| interphase | the phase of the cell cycle in which the cell is growing, doing its job, and possibly copying DNA |
| mitosis | the phase of the cell cycle in which the cell divides |
| prophase | the phase of mitosis in which the chromosomes condense, the nuclear membrane dissolves, and the spindle fibers form |
| metaphase | the phase of mitosis in which the chromosomes line up single file in the middle of the cell |
| anaphase | the phase of mitosis in which sister chromatids are separated and pulled to opposite ends of the cell |
| telophase | the phase of mitosis in which two nuclei form around the separated groups of chromosomes |
| cytokinesis | the splitting of a cell in half after mitosis |
| PMAT | an abbreviation that helps us to remember the order of the stages in mitosis |
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