Location of the X inactivation center in primates and other mammals

Wendy L. Flejter, D. L. Van Dyke, L. Weiss

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


In humans, the X chromosome inactivation center and an X inactivation-associated metaphase fold are at the same location (bands Xq13→21) or are very closely associated. In other mammals, the location of the X inactivation center is unknown, but it has been suggested that the relationship between the inactivation center and the inactivation-associated fold may make it a useful marker for both identifying the inactivated X and locating the inactivation center in other mammalian species. If a similar metaphase fold is present in other mammals, the inactivation center would be located at the same site or very nearby. All of nine primate species did express an inactivation-associated fold. In most, the fold was located at the band homologous to human Xq13→q21. In one of two chimpanzees, band Xq23→q24 was implicated. In five other mammals an inactivation-associated fold was observed, but in two species, no fold was observed.

Original languageEnglish (US)
Pages (from-to)63-66
Number of pages4
JournalHuman genetics
Issue number1
StatePublished - Sep 1986

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)


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