Figure 3.—

Gene structure alignment of the dsx genes in four holometabolous insect species. Boxes represent exons and lines represent introns. Only exons are drawn in scale. Shaded boxes are untranslated regions and open boxes are coding regions. Within coding regions, diagonally hatched boxes mark OD1/DBD and cross-checked boxes mark OD2. Note that the exons for the shared and female-specific coding regions are aligned. Untranslated regions and male-specific coding regions could not be aligned due to sequence divergence. The phylogenetic relationships among the four species and major outgroup lineages are shown at the left of the gene structures.