Chromosome Abnormalities and Non-Mendelian Inheritance Video Lessons

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Problem: Seeing a Barr body in the nucleus of a human cell suggests that the cell was derived from:A. a normal male.B. a normal female.C. a Turner syndrome female.D. a Down syndrome male.E. None of the answers listed above are correct.

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A barr body is an inactive X chromosome from individuals with multiple copies of it so as to avoid the double expression of proteins encoded in X-linked genes.

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Problem Details

Seeing a Barr body in the nucleus of a human cell suggests that the cell was derived from:

A. a normal male.

B. a normal female.

C. a Turner syndrome female.

D. a Down syndrome male.

E. None of the answers listed above are correct.

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