Retrotransposition, Diversity and the Brain
Gage, Fred H. Retroelements are ancient mobile DNA found in most organisms. Long dismissed as useless, selfish or "junk" DNA, they were thought to be mere intracellular parasites from our distant evolutionary past. Together with their mutant relatives, L1 sequences constitute almost 50% of the mammalian genome. L1s can retrotranspose in a defined window of the neuronal differentiation, changing the genetic information in single neurons in a "random" fashion...