As the genetic junk pile shrinks, and the treasure chest grows, it's worth considering what happened to so-called "jumping genes" since we last looked at them in 2012 and 2013. These were considered part of "junk DNA" by geneticists disinclined to look for function in something they didn't fully understand. Consisting of repetitive elements, called "Alu" sequences, jumping genes can move freely around the genome, but code for no proteins. What could they possibly be doing?
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Published on March 04, 2015 04:28