Barr body Notes: Definitions & Explanations PDF | Download eBooks
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Barr body Definition:
Inactive X in each cell of a female condenses into a compact object called a Barr body.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Barr body Notes:
A Barr body is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization, in those species in which sex is determined by the presence of the Y or W chromosome rather than the diploidy of the X. A barr body is visualized as a small, densely staining structure in the cell nuclei of females, consisting of a condensed, inactive X chromosome. It is regarded as diagnostic of genetic femaleness.
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