VIRAL NATURAL SELECTION. “These data show rapid adaptive evolution of the antiviral RNAi pathway in Drosophila. Viruses are the most likely candidates for driving this rapid evolution in genes of the (fruitfly host) siRNA pathway….they are important natural pathogens of Drosophila; nearly 40% of D. melanogaster are infected with horizontally transmitted viruses, and vertically transmitted viruses are also common.”
https://lnkd.in/e73iquh