Stretching DNA Yields Surprise

Most of us are familiar with the winding staircase image of DNA, the repository of a biological cell's genetic information. But few of us realize just how tightly that famous double helix is wound.

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<p><a href="http://www.physorg.com/news74251487.html">Stretching DNA Yields Surprise</a></p> <p>Most of us are familiar with the winding staircase image of DNA, the repository of a biological cell's genetic information. But few of us realize just how tightly that famous double helix is wound.</p>