| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,779,317,584 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
chromatid |
Also found in: Dictionary/thesaurus, Medical, Wikipedia | 0.01 sec. |
|
chromatid (krō`mətəd): see chromosome chromosome (krō`məsōm') ..... Click the link for more information. ; crossing over crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . ..... Click the link for more information. . chromatid [′krō·mə·təd] (cell and molecular biology) One of the pair of strands formed by longitudinal splitting of a chromosome which are joined by a single centromere in somatic cells during mitosis. One of a tetrad of strands formed by longitudinal splitting of paired chromosomes during diplotene of meiosis. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
Through a process of 'crossing over', the segments of non-sister chromatids of a homologous pair of homologous dyads are exchanged. Individuals in the exposed group presented a frequency of single chromatid-type alterations seven times higher than those involving both chromatids. Next, maternal sister chromatids pair up with their paternal counterparts, usually exchanging stretches of DNA before the first cell division in meiosis separates the maternal and paternal chromosomes into two cells. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|