Drosophila melanogaster is an ideal genetic model organism for circadian rhythms, which exhibits a great deal of circadian behavior, such as locomotor activity, feeding, eclosion and mating.

• 果蝇是研究昼夜节律的一个理想模式生物,表现许多昼夜节律行为包括活动、摄食、羽化和交配等。