Barr body

English

Etymology

Named after discoverer Murray Barr.

Noun

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
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