Figure 7.—

The combination of aret^PD/aret^QB and Dl^9P/+ mimics the Dl/Dl phenotype. (A–C) The different classes of aret^PD/aret^QB; Dl^9P/+ phenotypes. (A) A single large egg chamber that has formed by fusion or overproliferation. (B and C) Ovarioles with random or A/P incomplete egg chamber fusions, respectively. (D and E) Controls for comparison, aret^PD/aret^QB (D and D′) and aret^QB/+; Dl^9P/+ (E and E′). The absence of stalk cells between incompletely fused egg chambers is shown in C′, while stalk cells are visible in the controls (D′ and E′). Hts staining, which is strongest in somatic cells and is especially enriched in the stalk cells, is shown throughout.