Barr body

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English[edit]

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Etymology[edit]

Named after discoverer Murray Barr.

Noun[edit]

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 also[edit]