Answer
c.
Work Step by Step
Female mammals have two X chromosomes in their cells. One of the X chromosomes is tightly condensed and is called a Barr body. Many of the genes on Barr bodies are inactivated.
Biology: The Unity and Diversity of Life (14th Edition)
by Starr, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Published by
Brooks/Cole Publishing Co.
ISBN 10:
1305073959
ISBN 13:
978-1-30507-395-1
Chapter 10 - Self-Quiz - Page 175: 13
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