Yuji Hiwatashi i' 2 and Hiroo Fukuda3 i Department ofMblecutar Biomechanies, School ofLijle Science, 7Vte Graduate bliiversity for Advanced Studies, 38 Nishigonaka, Adyodaijt; Okazaki, 444-8585 Jopan 2 speeiation Mlechanisms 2. Ntitional institute for Basic Biology, 38 IVishigonaka, Alyodaiji, Okazaki, 444-8585 Jopan 3 Department ofBiological Sciences. Graduate School ofScience, 7:he University...