Human Genetics Problem Set

Problem 14: Barr body

Correct!

A Barr body is:

A. the cause of Down's syndrome
B. an amplified gene
C. a polytene chromosome
D. a ribonucleoprotein particle
E. 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."


The Biology Project
University of Arizona
Revised: November 5, 1998
Contact the Development Team

http://biology.arizona.edu
All contents copyright © 1996-98. All rights reserved.