The progenitor P{EP}EP30.18 insertion is also still present on the chromosome.
Frame shift at position 362, resulting in translation termination after twelve additional amino acids (FFSGGRVARCQR) (revision of data reported in FBrf0183826).
Homozygous flies are normal in size. Homozygous clones induced in the imaginal discs show growth behaviour indistinguishable from that of their neighbouring twin spot clones. Homozygous flies raised on reduced yeast levels (30% yeast compared to standard food medium) show a significant weight reduction (9% in males and 20% in females) compared to flies reared on standard fly medium (100% yeast) (wild-type flies do not show this reduction in weight at reduced yeast levels). The reduced size in the mutant flies is due to a reduction in cell number, as cell size is unaffected in adult wings. Further reduction of the yeast content (to 20%) results in a more pronounced weight loss in the mutant flies, which is caused by a reduction in both cell size and cell number. Under starvation conditions, homozygous females live nearly 50% longer than control flies and homozygous males live 22% longer than control flies.