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CP Cell Division
cell division chapter 8
| Question | Answer |
|---|---|
| chromosome | DNA wrapped around histone proteins |
| histone | protein in which DNA wraps itself around within the nucleus |
| chromatid | half of a chromosome |
| centromere | the point in which chromatids attach |
| chromatin | less tightly coiled DNA-protein complex |
| sex chromosome | X or Y chromosome- determines gender |
| autosome | a chromosome other than a sex chromosome |
| homologous chromosomes | chromosomes that are the same size and have the same genes |
| karotype | picture of a person chromosomes |
| diploid | a full set of chromosomes- 46 in humans (somatic cells) |
| 2n | diploid |
| haploid | half a set of chromosomes- 23 in humans (sex cells) |
| somatic cells | body cells- any cell other than sex cells |
| binary fission | asexual reproduction that bacteria perform |
| mitosis | cell division- PMAT |
| gamete | sex cell |
| interphase | G1, S, G2 - cells spend most of their time in this phase |
| cytokinesis | division of cytoplasm |
| prophase | chromatin condenses into chromosomes |
| spindle fiber | fibers that pull chromosomes across the cell |
| metaphase | chromosomes meet in the middle |
| anaphase | chromosomes get pulled apart |
| telophase | two cells (two nuclei) result |
| cell plate | the plate that separates two PLANT cells at the end of telophase |
| cleavage furrow | the indentation that happens when two ANIMAL cells go through cytokinesis |
| checkpoints | signals that trigger the cell to advance through the cell cycle |
| crossing over | process that occurs of prophase 1 of meiosis that increases genetic diversity |
| spermatogenesis | meiosis of a germline cell that creates 4 sperm cells in men |
| oogenesis | meiosis of a germline cell that creates 1 egg cell and 3 polar bodies in women |
| sexual reproduction | require two parents, egg and sperm |
| mitosis | 1 diploid cell makes 2 diploid cells that are identical |
| meiosis | 1 diploid cell makes 4 haploid cells that are all unique |