MicroRNA-encoded behavior in Drosophila Editor’s summary: MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene activity. They repress expression through complementary base pairing interactions with target messenger RNAs. MiRNAs are involved in regulating many cell and developmental processes. Picao-Osorio et al. find that miRNAs can also control behavior in the fruit fly Drosophila. My comment: Ridiculous claims from 1) We are all mutants and from 2) Mutation-Driven Evolution can now be placed into the context of what is known to…