Figure 7. Genomic organizations of the coding regions of the AKH receptor genes from several insects, the molluscs C. gigas and the annelid C. teleta.

For comparison the corazonin receptor (CRZR) gene from D. melanogaster and the GnRH receptor (GnRHR) gene from H. sapiens are also included. For other abbreviations see Fig. 6. The numbers give intron phasings; red numbers indicate introns that are in common with the C. gigas AKHR1 gene; black numbers are introns that are not shared with this gene. Roman numbers (I-VII) indicate the regions that code for the transmembrane regions (given as vertical blue bars).