[n] - an intersection or crossing of two tracts in the form of the letter X
Found op http://www.webdictionary.co.uk/definition.php?query=chiasma
(= chiasmata (plural)) Junction points between non-sister chromatids at the first diplotene of meiosis, the consequence of a crossing-over event between maternal and paternally derived chromatids. A chiasma also serves a mechanical function and is essential for normal equatorial alignment at meiotic...
Found op http://www.encyclo.co.uk/visitor-contributions.php
<cell biology> Junction points between nonsister chromatids at the first diplotene of meiosis, the consequence of a crossing over event between maternal and paternally derived chromatids. ... A chiasma also serves a mechanical function and is essential for normal equatorial alignment at meioti...
Found op http://www.mondofacto.com/facts/dictionary?chiasma
chiasm noun an intersection or crossing of two tracts in the form of the letter X
Found op http://wordnetweb.princeton.edu/perl/webwn?s=chiasma
(ki-az´mә) pl. chias´mata Latin word meaning chiasm, or X-shaped crossing. in genetics, a point where pairs of homologous chromatids remain in contact during the first meiotic division, indicating where an exchange of homologous segments has taken place between nonsister chromatids by recomb...
Found op http://www.encyclo.co.uk/local/21001
• (n.) A commissure; especially, the optic commissure, or crucial union of the optic nerves.
Found op http://thinkexist.com/dictionary/meaning/chiasma/
(from the article `heredity`) ...was that the degree of linkage depends on physical distance between the genes in the chromosome: the closer the genes, the tighter the linkage and ...
Found op http://www.britannica.com/eb/a-z/c/67
chiasma (s., kigh AZ muh), chiasmata (pl., kigh AZ muh tuh) 1. A crossing; two things placed cross-wise. 2. In anatomy, the crossing over of body parts; any crossing over of biological tissue. 3. A crossing or intersection of the optic nerves on the ventral surface of the brain. 4. Etymology: Mid-1...
Found op http://www.wordinfo.info/words/index/info/view_unit/442/
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