Human Genetics Problem Set
Problem 14: Barr body
Correct!
A Barr body is:
A.
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the cause of Down's syndrome
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B.
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an amplified gene
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C.
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a polytene chromosome
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D.
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a ribonucleoprotein particle
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E.
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an inactivated X chromosome
One of the two X chromosomes in female somatic cells is visualized as a densely staining body within the nucleus known as a "Barr body."
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The Biology Project
University of Arizona
Revised: November 5, 1998
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