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- Barr_body abstract "A Barr body (named after discoverer Murray Barr) is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization, in those species in which sex is determined by the presence of the Y (including humans) or W chromosome rather than the diploidy of the X or Z. The Lyon hypothesis states that in cells with multiple X chromosomes, all but one are inactivated during mammalian embryogenesis. This happens early in embryonic development at random in mammals, except in marsupials and in some extra-embryonic tissues of some placental mammals, in which the father's X chromosome is always deactivated.In humans with more than one X chromosome, the number of Barr bodies visible at interphase is always one less than the total number of X chromosomes. For example, men with Klinefelter syndrome (47,XXY karyotype) have a single Barr body, whereas women with a 47,XXX karyotype have two Barr bodies. Barr bodies can be seen on the nucleus of neutrophils.".
- Barr_body thumbnail Sd4hi-unten-crop.jpg?width=300.
- Barr_body wikiPageExternalLink 1347.
- Barr_body wikiPageExternalLink default.cfm?ISBN=9780702029172&ID=HC006029).
- Barr_body wikiPageID "52994".
- Barr_body wikiPageRevisionID "604375379".
- Barr_body hasPhotoCollection Barr_body.
- Barr_body subject Category:Genetics.
- Barr_body comment "A Barr body (named after discoverer Murray Barr) is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization, in those species in which sex is determined by the presence of the Y (including humans) or W chromosome rather than the diploidy of the X or Z. The Lyon hypothesis states that in cells with multiple X chromosomes, all but one are inactivated during mammalian embryogenesis.".
- Barr_body label "Barr body".
- Barr_body label "Chromatyna płciowa".
- Barr_body label "Corpo di Barr".
- Barr_body label "Corpuscule de Barr".
- Barr_body label "Corpúsculo de Barr".
- Barr_body label "Corpúsculo de Barr".
- Barr_body label "Geschlechts-Chromatin".
- Barr_body label "Geslachtschromatine".
- Barr_body label "Тельце Барра".
- Barr_body label "巴爾小體".
- Barr_body sameAs Geschlechts-Chromatin.
- Barr_body sameAs Corpúsculo_de_Barr.
- Barr_body sameAs Corpuscule_de_Barr.
- Barr_body sameAs Corpo_di_Barr.
- Barr_body sameAs 바소체.
- Barr_body sameAs Geslachtschromatine.
- Barr_body sameAs Chromatyna_płciowa.
- Barr_body sameAs Corpúsculo_de_Barr.
- Barr_body sameAs m.0dxnh.
- Barr_body sameAs Q790757.
- Barr_body sameAs Q790757.
- Barr_body wasDerivedFrom Barr_body?oldid=604375379.
- Barr_body depiction Sd4hi-unten-crop.jpg.
- Barr_body isPrimaryTopicOf Barr_body.
