During courtship, Drosophila melanogaster males sing to females a song composed of rhythmic pulses and sine song. In this issue of Developmental Cell, Shirangi et al. (2016) show that a cluster of doublesex-expressing neurons directs the production of the sine song component through functional linkages to wing motoneurons.
Male and female reproductive behaviors in Drosophila melanogaster are vastly different, but neurons that express sex-specifically spliced fruitless transcripts (fru P1) underlie these behaviors in both sexes. How this set of neurons can generate such different behaviors between the two sexes is an unresolved question. A particular challenge is that fru… (More)