Expression of roboΔCC2.Scer\UAS.T:Hsap\MYC, under the control of Scer\GAL4unspecified, in the giant fiber results in a 3-4-fold decrease in the penetrance of a "bendless"-like phenotype (the end of the giant fiber (GF) is either swollen or tapered) compared to expression of roboScer\UAS.cKa.