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Non-coding DNA adapts
Email: Melissa Lee Phillips - mlp@nasw.org News from The Scientist 2005, 6(1):20051020-01
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Much of the "junk" DNA in Drosophila shows signs of either negative or positive selection, according to a study in this week's Nature. An analysis by Peter Andolfatto of the University of California, San Diego, reveals that around half of non-coding Drosophila DNA is evolutionarily constrained and that much of the remaining divergent DNA has undergone adaptive evolution. Both types of selection show that "this non-coding DNA actually has functional importance to the organism," said Andolfatto.
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