Homozygotes have normal activity rhythm periods. The period of m^D CkIIβ^And flies is indistinguishable from that of CkIIβ^And/+ flies and is significantly shorter than that of CkIIβ^And homozygotes.

Normal circadian rhythms, but aperiodic bouts of activity. Bristles on wing are bent and twisted. Dose-dependent effects of cell boundary degeneration: absent in wild type and intact in homozygotes.

Wings of homozygote smaller than m/m. m^D/+ wings intermediate between homozygote and wild type. Viability 20-50% normal in males and 5% in homozygous females; most die in embryo. Fertility low in homozygous females. Wing size of m^D/m and m^D/dy intermediate between m^D/+ and m^D/m^D. RK2.