Enzymes allow DNA to swap information with exotic molecules
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Scientists have been hunting for a biological Rosetta Stone -- an enzyme allowing DNA's four-letter language to be written into a simpler (and potentially more ancient) molecule that may have existed as a genetic pathway to DNA and RNA in the prebiotic world. Research results demonstrate that DNA sequences can be transcribed into a molecule known as TNA and reverse transcribed back into DNA, with the aid of commercially available enzymes.
