Tuesday, May 22, 2007
There's been a lot of talk about genes lately, so here's more...
Approximately 1/12 of our genome consists of stretches of DNA from viruses that infected our ancestors millions of years ago. According to epidemiologist Prescott Deininger of Tulane University, these and other parasitical, self-replicating pieces of DNA have evolved with us and can insert copies of...
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