Fig. 1.

The 5-HT_1ADro receptor locus and 5 kb region used for Gal4 construct. The genomic region of the 5-HT_1ADro locus (CG16720) is on the right arm of the second chromosome (light bars 5′ and 3′ untranslated regions, dark bars coding regions; arrows indicate mRNA transcription start sites). The 5-kb region of genomic DNA used to make the GAL4 construct is indicated immediately upstream of the mRNA start site. The adjacent CG15109 locus is 7 kb upstream of the first exon of the 5-HT_1ADro gene. The CG15109 transcript has been reported to be exclusively expressed in the male testis