Sex Chromatin

**Definition:** 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)

**Tree numbers:** - A11.284.187.865.800 - A11.284.430.106.279.345.190.160.180.383.800 - G05.360.160.180.383.800 - G05.360.162.865.800

**Synonyms:** - Barr Bodies - Chromatin, Sex