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March 8, 2006
Virual DNA emeshed in our DNA
"They're not doing anything," says Villarreal. "They're just persisting. And they were around long before humans evolved. The better part of the human genome is composed of viral DNA. That's true of nearly all eukaryotes, and the more complicated the organisms, the more of those sequences you have. We aren't sure exactly what they all do, but they are part of our genetic identity, this stuff we dismiss as junk. 'Junk' and 'parasite' are both words that will get you into a fight if you use them improperly. And yet they are where all life's creativity lies—its very origins."
Posted by thdyck on March 8, 2006
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