Cell Component
sex chromatin Audio
sex chro·ma·tin
Subclass of:
Sex Chromosomes; Heterochromatin
Definitions related to sex chromatin:
  • (barr body) The inactive, condensed X chromosome in a female somatic cell.
    NCI
    U.S. National Cancer Institute, 2021
  • (barr body) A structure found in a female mammalian cell containing an unpaired X chromosome that has become densely heterochromatic, silenced and localized at the nuclear periphery.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
  • In the interphase nucleus, a condensed mass of chromatin representing an inactivated X chromosome. Each X CHROMOSOME, in excess of one, forms sex chromatin (Barr body) in the mammalian nucleus. (from King & Stansfield, A Dictionary of Genetics, 4th ed)
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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