Heterozygous females raised at 25oC or 30oC completely sterile; minimal development noted of zygotes resulting from eggs of females raised at 20oC; heterozygous males fertile. Ten percent as many egg chambers as normal and 10% of chambers have fewer than 16 cells, generally lacking an oocyte. Ovaries of heterozygous females developing at 30oC frequently fail to attach to oviducts. At 25oC and 30oC, heterozygous females take one day longer to develop than controls; viability of Fs(2)G1/+ females 70-75% at 20oC and 25oC, 5% at 30oC. Wings of heterozygotes normal at 20oC, frequently incised at 30oC, greatly reduced and crumpled at 30oC. Bristles short; thorax broad and flattened with air bubbles under cuticle. RK3.
