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Barr body

noun

Barr body

noun

Etymology Named after discoverer Murray Barr.

1

Biology, Natural sciences 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.
Related terms
lyonization

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.