Look up: Chiasma

1. 
   chiasma
   [n] - an intersection or crossing of two tracts in the form of the letter X
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. 
   chiasma
   a stage during meiosis where two homologous chromatids,one from each member of a pair of homologous chromosomes,cross(as a consequence of crossing-over),resulting in an exchange of chromatid segments and hence in recombination Category: Medicine
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 
   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 metaphase I in many species. Frequency of chiasmata is very variable between species.
   Found on
   
   
4. 
   chiasma
   <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 meiotic metaphase I in many species. Frequency of chiasma ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
5. 
   chiasma
   chiasm noun an intersection or crossing of two tracts in the form of the letter X
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
6. 
   Chiasma
   A `chiasma` means `crossing.` In anatomy, it refers to the point where two (or more) nerves or ligaments cross or intersect. In genetics, it is a technical term for the point where two chromatids are intertwined (interwoven) in a cell.
   Found on http://en.wikipedia.org/wiki/Chiasma
   
   
7. 
   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 recombination.
   Found on http://www.mercksource.com/pp/us/cns/cns
   
   
8. 
   Chiasma
   • (n.) A commissure; especially, the optic commissure, or crucial union of the optic nerves.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. 
   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 on http://www.britannica.com/eb/a-z/c/67
   
   
10. 
    chiasma
    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-19th century via modern Latin from Greek ...
    Found on http://www.wordinfo.info/words/index/inf
    
    
11. 
    chiasma
    Syn: chiasm [G. chiasma, two crossing lines, fr. the letter chi, 3]
    Found on
    
    
12. 
    chiasma
    chiasma (kīăz'mu) : see crossing over.
    Found on http://www.infoplease.com/ce6/sci/A09117