<i>sgg</i> is downstream of <i>Wnk</i> in the <i>Drosophila</i> wing vein and abdominal patterning.

<p>(A) Wild-type wing. (B) Wing from EY10165 (UAS-<i>Wnk</i>) fly driven by <i>hh</i>-<i>Gal4</i>. Additional veins around vein 5 (arrowhead) were observed. (C) Wing from fly overexpressing <i>Wnk</i> driven by <i>hh</i>-<i>Gal4</i> with the <i>Akt1</i>^<i>04226</i> heterozygous mutant. (D) Wing from fly overexpressing <i>Wnk</i> driven by <i>hh</i>-<i>Gal4</i> with the <i>sgg</i>^<i>1</i> heterozygous mutant. (E) Wing from fly overexpressing <i>Wnk</i> driven by <i>hh</i>-<i>Gal4</i> with the <i>sgg</i>^<i>M11</i> heterozygous mutant. (F) Wing from UAS-<i>fray</i>^<i>S347D</i> fly driven by <i>hh</i>-<i>Gal4</i>. Additional veins around vein 5 (arrowhead) were observed. (G) Wing from fly overexpressing <i>fray</i>^<i>S347D</i> driven by <i>hh</i>-<i>Gal4</i> with the <i>sgg</i>^<i>1</i> heterozygous mutant. (H) Abdomen from adult fly with <i>DWNK</i>^<i>EY18</i> minute clones. Thin black lines indicate the clone border. (I) Abdomen from adult fly with <i>DWNK</i>^<i>EY18</i> minute clones and <i>sgg</i> overexpression. <i>sgg</i> was expressed only in <i>DWNK</i>^<i>EY18</i> minute clones using the <i>Gal80</i> suppression technique. Thin black lines indicate the clone border (also the <i>sgg</i> expression area). Black arrowheads show rescued abdominal bristles. The detailed genotype is <i>y w hsflp</i>; <i>arm</i>-<i>Gal4</i> / UAS-<i>sgg</i>; <i>Wnk</i>^<i>EY18</i> FRT2A / <i>hsGFP hsCD2</i>(<i>y</i>^<i>+</i>) <i>M(3)i55 Tub>Gal80</i> FRT2A. The numbers of wings or abdomina showing the phenotypes and of total observed wings or abdomina are indicated.