Barr body

EnglishEdit

 
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EtymologyEdit

Named after discoverer Murray Barr.

NounEdit

Barr body (plural Barr bodies)

  1. (biology) A sex chromosome inactivated by packing in heterochromatin.
    Men with Klinefelter syndrome (47,XXY karyotype) have a single Barr body, whereas women with a 47,XXX karyotype have two Barr bodies.

See alsoEdit