Showing posts with label Biology. Show all posts
Showing posts with label Biology. Show all posts
Monday, April 4, 2011
Tuesday, April 28, 2009
What makes a man?
The shriveled mess at the bottom: The y-chromosome. How sad.
"The Y chromosome, however, which is inherited by males in concert with one X chromosome, is a withered version of the X, having lost many genes since it stopped recombining with the X chromosome."
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