Insertion in the upstream region of the sktl gene.
sktlΔ1-1/sktlΔ20 is an enhancer of eye photoreceptor cell phenotype of rdgA3
sktlΔ1-1/sktlΔ20 is a suppressor of rhabdomere phenotype of PldUAS.cRa, Scer\GAL4GMR.PF
There is a dramatic increase in rhabdomere size in flies expressing PldScer\UAS.cRa under the control of Scer\GAL4GMR.PF in a sktlΔ1-1/sktlΔ20 background compared to flies expressing PldScer\UAS.cRa under the control of Scer\GAL4GMR.PF in a wild-type background.