- Institution/s: Rheinische Friedrich-Wilhelms-Universität Bonn, Universidad de Valladolid
- Project: Diccionario Terminológico de Genética (Eurogene)
- Identification number: 66
- Subdomains: Studies of chromatin, Studies of DNA, Studies of RNA, Techniques
- Author/s: Ana María ALCONCHEL SEBASTIÁN, Beatriz BURGOS CUADRILLERO, Inés PLAZA FONTANET, Patricia ROJO DE DOMINGO
- Creation / modification date: 30-01-2014
- Term: Barr body (X-chromatin body)
- Gramatical category: s
- Definition: A densely staining mass in the somatic nuclei of mammalian females; an inactivated X chromosome.
- Context: The Barr body, as it came to be known, is not seen in the nuclei of the cells of normal males.
- Notes: Originally called sex chromatin or X-chromatine, its discovery in 1949 by two Canadian researchers, Murray Barr and Edward Bertram, led to a whole new field of study, human cytogenetics, the study of chromosome abnormalities.
- Remission: anton, allosome. Source: ARORA, S. (2006). Excel with complete genetics. Laxmi Publications.
- Sources:
- Term: Corpuscule de Barr. Encyclopaedia Universalis. Repéré à : http://www.universalis.fr/recherche/?q=%22corpuscule+de+barr%22&btn_recherche=
- Definition: READ. A. & DONNAI. D. (2008). Qu’est-ce que l’épigénétique ? Dans Génétique médicale : De la biologie à la pratique clinique (p. 184, traduit par Le Boeck & Larcier). Bruxelles : De Boeck Supérieur.
- Context: ARMENGAUD. D. (2003). Santé et environnement. Dans Pédiatrie (3e édition, p. 318). Paris : Med-Line.
- Images:
http://i938.photobucket.com/albums/ad230/erwinbue/Barr-Krperchen100oilbeschriftet.jpg (abgerufen im August 2013).
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