It's a crisp fall day in Northville, Mich., a small suburb of Ann Arbor, and Kirk Maxey, a soft-spoken, graying baby boomer with a classic square jaw, is watching his 12-year-old son chase a soccer ...
The black and orange patches that define the coloring of a calico cat beautifully illustrate the genetic mechanism known as "dosage compensation" through X chromosome inactivation. Shutterstock Image ...
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