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Reversing Conventional DNA Wisdom |
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Written by Anne Trafton - MIT
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Sunday, 07 December 2008 |
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 The copying of DNA's master instructions into messenger molecules of RNA, a process known as DNA transcription, has always been thought to be a unidirectional process whereby a copying machine starts and moves in one direction. But in work that represents a fundamental shift in scientists' understanding of the phenomenon, MIT researchers have found evidence that two DNA copying machines frequently start from the same site and move in different directions.
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