Unfurled, the human genome would contain approximately six feet of DNA. Amazingly, all of that length is packed into a cell nucleus about three micrometers in diameter--roughly one-tenth the width of a human hair. New technology that makes it possible to assess the three-dimensional interactions among different parts of the genome has revealed how these molecules are packed into such a tiny space. The findings could also yield new clues to genome regulation--how specific genes are turned on. (source: technologyreview.com)
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