Lesion predicted to create a splicing error.
stjDD131/stjDD131, stjDD131/Df(2R)CX1 or stjDD131/Df(2R)Exel7128 animals die as well-formed, late stage embryos.
Adults with eyes that are homozygous for stjDD131 (due to somatic clones induced using Scer\FLP1Scer\UAS.cDa; Scer\GAL4ey.PH) have severely abnormal electro-retinograms (ERGs) in response to light: on/off transients are lacking and the sustained components of the response are abnormally slow in their onset and recovery.