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20 Things You Didn’t Know About... DNA

IDing crooks from DNA in their fingerprints, the 8 percent of our genome that came from viruses and the plant that laughs at our genetic endowment

onathon Rosen

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1 Sorry, Jimmy: James Watsonand Francis Crick did not discover DNA. That honor goes to Swiss biochemist Friedrich Miescher, who in 1869 found the molecule in the nuclei of white blood cells and called it nuclein.

2 Nor did they figure out that DNA is our genetic blueprint; bacteriologist Oswald Averyand his colleagues did that in the early 1940s.

3 What Watson and Crick did do, in 1953, was decipher the double-helix structure of DNA. Their discovery ran as a single-page paper in Nature.

4 Phosphorus is a key component of DNA, but late last year a team of NASA scientists published a controversial study reporting that they had found a bacterium that could use arsenic instead. “What else can life do that we haven’t seen yet?” wondered lead researcher Felisa Wolfe-Simon.

5 Don’t try this at home: If uncoiled, the DNA in all the cells in your body would ...

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