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Section 5.2 Vocab
Term | Definition |
---|---|
Chromosome | One long continuous thread of DNA that consists of numerous genes along with regulatory information. |
Histone | Protein that organizes chromosomes and around which DNA wraps. |
Chromatin | Loose combination of DNA and proteins that is present during interphase. |
Chromatid | One half of a duplicated chromosome. |
Centromere | Region of condensed chromosomes that looks pinched; Where spindle fibers attach during meiosis and mitosis. |
Telomere | Repeating nucleotide at the ends of DNA molecules that do not form genes and help prevent the loss of genes. |
Prophase | First phase of mitosis when chromatin condenses, the nuclear envelope breaks down, the nucleolus disappears, and the centrosomes and centrioles migrate to opposite sides of the cell. |
Metaphase | The spindle fibers attach to a protein structure on the centromere of each chromosome and align the chromosomes along the cell equator, around the middle o the cell. |
Anaphase | Sister chromatids separate from each other. |
Telophase | A complete set of identical chromosome is positioned at each pole of the cell. |