click below
click below
Normal Size Small Size show me how
M@M
mitosis and meiosis
| Term | Definition |
|---|---|
| • binary fission | type of cell division that occurs in prokaryotic cells in which a parent cells divides into two identical daughter cells |
| • cancer | disease that occurs when the cell cycle is no longer regulated and cells divide out of control |
| • cell cycle | repeating series of events that a cell goes through during its life, including growth, DNA, synthesis, and cell division |
| • cell division | process in which a parent cell divides to form two daughter cells |
| • cytokinesis | splitting of the cytoplasm to form daughter cells when a cell divides |
| • DNA replication | process of copying of DNA prior to cell division |
| • interphase | stage of the eukaryotic cell cycle when the cell grows, synthesizes DNA, and prepares to divide |
| • mitosis | process in which the nucleus of a eukaryotic cell divides |
| • tumor | abnormal mass of cells that may be cancerous |
| • anaphase | third phase of mitosis during which sister chromatids separate and move to opposite poles of the cell |
| • centromere | region of sister chromatids where they are joined together |
| • chromatid | one of two identical copies of a chromosome that are joined together at a centromere before a cell divides |
| • chromatin | grainy material that DNA forms when it is not coiled into chromosomes |
| • chromosome | coiled structure made of DNA and proteins containing sister chromatids that is the form in which the genetic material of a cell goes through cell division |
| • gene | unit of DNA on a chromosome that is encoded with the instructions for a single protein |
| • homologous chromosomes | pair of chromosomes that have the same size and shape and contain the same genes |
| • metaphase | second phase of mitosis during which chromosomes line up at the equator of the cell |
| • prophase | first phase of mitosis during which chromatin condense into chromosomes, the nuclear envelope breaks down, centrioles separate, and a spindle begins to form |
| • telophase | last stage of mitosis during which chromosomes uncoil to form chromatin, the spindle breaks down, and new nuclear membranes form |