This undated image provided by the U.S. National Cancer Institute shows the 46 human chromosomes, where DNA resides and does its work. Each chromosome contains genes, but genes comprise only 2 percent of DNA. On Wednesday, Sept. 5, 2012, 500 scientists around the world reported their findings on the complex functions occurring in the rest of DNA, much of it involved in regulating genetic activity. (AP Photo/National Cancer Institute)
Read the article: New DNA encyclopedia shows complex inner workings
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