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06. Cell Cycle
Mitosis
Term | Definition |
---|---|
Mitosis | Division of the cell nucleus and its contents |
Prophase | DNA and proteins condense into tightly coiled chromosomes. The nuclear envelope breaks down and centrioles begin to move to opposite poles. ("Prepare") |
Metaphase | Spindle fibers attach to each chromosome. They align the chromosomes along the middle of the cell. ("Middle") |
Anaphase | Chromatids separate to opposide sides of the cell. ("Apart") |
Telephase | Nuclear membranes start to form, chromosomes begin to uncoil, and the spindle fibers fall apart. |
Chromosomes | Divides the cell cytoplasm |
Chromatid | One half of a duplicated chromosome |
Sister chromatids | Two identical chromatids held together by a centromere |
Centromere | Sister chromatids are held together here |
Spindle Fibers | Help align the chromosomes at the middle of the cell |
Centrioles | Help divide DNA during cell division by producing spindle fibers that attach to the DNA and pull it to one side of the cell. |
Diploid (2n) | cell that has two copies of each chromosome, one from an egg and one from a sperm. |
Identical Cells | Cells produced from cell division that are genetically identical to the parent cell. |
Homologous Chromosomes | Chromosomes that have the same length, appearance, and copies of genes, although the alleles may differ |
Original Chromosome Number Restored | After a cell duplicates its DNA during S phase, the cell will divide resulting in the original chromosome number. |
Cytokinesis | The division of the cell cytoplasm |