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Scoop.it!
Researcher bases explanation on shape and movement of proteins and other biomolecules, rather than historical model of composition. 
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Scoop.it!
BigField GEG Tech's insight:
A new study led by scientists at The Scripps Research Institute (TSRI) offers a twist on a popular theory for how life on Earth began about four billion years ago. The study questions the “RNA world” hypothesis, a theory for how RNA molecules evolved to create proteins and DNA. Instead, the new research offers evidence for a world where RNA and DNA evolved simultaneously.
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A University of Arkansas chemist and his collaborator at North Carolina State University have developed a new theory for explaining how proteins and other biomolecules function based on movement and change of shape and structure rather than content.