UASt regulatory sequences drive expression of an inverted repeat.
Adults expressing Spag1KK100470 under the control of Scer\GAL4sca.PU show a significant decrease in climbing activity, as compared to controls.
In individuals expressing Spag1KK100470 under the control of Scer\GAL4VP16.bam, testes lack motile sperm and, although sperm bundles are largely normal and axonemes show loss of dynein arms.
In individuals expressing Spag1KK100470 under the control of Scer\GAL4sca.PU, Ch neurons have a grossly normal cilium morphology despite of the absence of dynein arms.