Evolution of multiple additive loci caused divergence between Drosophila yakuba and D. santomea in wing rowing during male courtship.
In Drosophila, male flies perform innate, stereotyped courtship behavior.This innate behavior evolves rapidly between fly species, and is likely to have contributed to reproductive isolation and species divergence.We currently understand little about the neurobiological and genetic mechanisms that contributed to the evolution of courtship behavior.