Even among flies, mating is a complicated ritual. Their elaborate, and entirely innate, courtship dance combines multiple motor skills with advanced sensory cues. Now, researchers have determined that the Abdominal-B (Abd-B) gene, previously known as the gene that sculpts the posterior parts of the developing fly, is also important for this complex behavior, at least in the case of female flies.

Source: Genetically driven gut feelings help female flies choose a mate