Imprecise excision of the progenitor insertion, resulting in a deletion that removes the 2 most C-terminal sosie exons.
Follicle cells fail to extend process and to migrate around the germ cells in sosie5/Df(3R)Exel6200 germaria, leading to an open continuum of germline cells from germarial region 2 to 3. Border cells migrate far ahead of outer follicle cells in sosie5/Df(3R)Exel6200 egg chambers, in contrast to the synchronous migration seen in wild type.