Barr body Notes: Definitions & Explanations PDF | Download eBooks
Study Barr body lecture notes PDF with biology definitions and explanation to study What is Barr body?. Study barr body explanation with biology terms to review biology course for online degree programs.
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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