2002 Volume 43 Issue 2 Pages 63-74
Circadian rhythm is one of the essential characteristics living organis ms. The understanding of the mechanisms underlying in circadian rhythm is animportant subject of modern biology. In this study we tried to establis hsuitable educational materials and experimental systems for which student sstudy circadian rhythm in high schools. The house fly, Musca domestica, has many advantages for educational such as easiness of cultivation, clear genetic markers, short life cycle, and so on.
In this study we establsdhed an automatic recording apparatus to measure the time of eclosion and analyzed the circadian rhythm of eclosion in the large population of house fly. The rhythm of eclosion was found to depend upon separate biological clocks in the pupal and larval stages. A comparison of the wild type and triple mutant (white eyes, brown body and pointed wings) showed that the mutant has a short periodicity of eclosion. Cross breediug analysis suggested that a single gene controls the short periodicity of the eclesion rhythm in the mutant.
