Mobile DNAs are potent sources of mutation in wild populations, but seem only rarely to have been used in adaptive evolution. A new study has revealed a mobile DNA insertion in Drosophila simulans that is associated with an apparent selective sweep and an elevation in expression level of an adjacent gene which creates insecticide resistance.
Brookfield, J. F. Y. (2004, May 4). Evolutionary genetics: Mobile DNAs as sources of adaptive change? Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2004.04.021