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15:47, 16 April 2007
"All living creatures contain DNA" might be pushing it. Viruses and retroviruses, AFAIK, only have RNA. [[User:Human|Human]] 21:46, 15 April 2007 (EDT)
A double helix is just like one ladder that is twisted around. The two sides of the ladder are the helices (and in this analogy, the base pairs are the rungs, of course). Gattaca! [[User:Human|Human]] 11:47, 16 April 2007 (EDT)
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