Figure 3

spen mutations affect wing hair polarity. Crosses were performed as described in Figure 1. Shown are details (see inset in A) of adult wings isolated from progeny females with the genotypes: {MS1096 GAL4/ +; 40 2piM FRT^40A/ GFP FRT^40A; UAS-Flp1/ +} (A), {MS1096 GAL4/ +; spen^poc361 FRT^40A/ GFP FRT^40A; TM6b/ +} (B), {MS1096 GAL4/ +; spen^poc231 FRT^40A/GFP FRT^40A; UAS-Flp1/ +} (C), and {MS1096 GAL4/+; spen^poc361 FRT^40A/ GFP FRT^40A; UAS-Flp1/ +} (D). Arrows indicate the direction of the bristles.