UAS regulatory sequences drive expression of an inverted repeat.
Expression of Dsor1JF03100 under the control of Scer\GAL4tj-NP1624 results in an accumulation of early germ cells in the testis. The nuclei of many cyst stem cells in the mutant gonad are positioned adjacent to hub cells (in wild type the nuclei are dispersed away from the hub), while the number of germline stem cells associated with the hub is decreased compared to wild type.