UASt sequences drive expression of a 3.5kb fs(1)Yb cDNA.
female germline stem cell | increased number, with Scer\GAL4hs.PB
nurse cell spectrosome, with Scer\GAL4hs.PB
stalk follicle cell | increased number, with Scer\GAL4hs.PB
Females with fs(1)YbScer\UAS.cKa, driven by Scer\GAL4hs.PB (and heatshocked) have germaria with an increased number (Over double that of wild-type) of spectrosome containing germ-line cells. The number of stalk cells in also increased 5-fold.