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Cell Cycle & Cancer
| Term | Definition |
|---|---|
| anaphase (I and II) | chromosomes pulled apart |
| cancer | uncontrolled cellular growth and division |
| centriole | cell part that sends out spindle fibers and is the center of new daughter cells |
| centromere | where sister chromatids are held together |
| chromatin | relatively thin and unbound DNA during interphase |
| chromosome | a piece of DNA |
| crossing over | exchange of genetic material during metaphase |
| cytokinesis | division of cytoplasm and cell parts |
| daughter cell | created during mitosis |
| diploid | two copies of each chromosome in the cell (46 in humans) |
| equator | midpoint of the cell |
| gamete | egg or sperm cell |
| haploid | one copy of each chromosome in the cell (23 in humans) |
| homologous pair | chromosomes that code for the same genes; one from mom, one from dad |
| karyotype | image of all the chromosomes in a cell |
| metaphase (I and II) | chromosomes align at the equator |
| nondisjunction | sister chromatids fail to separate in anaphase |
| prophase (I and II) | chromosomes condense and become visible, nuclear envelope disappears |
| sister chromatids | twin copies of a chromosome held together by a centromere |
| spindle fibers | cytoskeleton parts that move the chromosomes during cell division |
| synthesis | create or make |
| telophase (I and II) | chromosomes decondense, nuclear envelope begins to reform |
| Asexual | reproduction by mitosis (binary fission) performed by single celled organisms |
| Sexual | reproduction by merging of gametes; results in greater genetic diversity |