LWS opsin genomic regions and teleost gene synteny. Genomic organization and gene synteny comparisons across teleosts for genes annotated from X. helleri BAC clones VMRC27-80H16 (A) and VMRC27-186P13 (B). Picture style was adapted from Genomicus http://www.dyogen.ens.fr/genomicus-57.01/cgi-bin/search.pl webcite. Genes are depicted by colored polygons and transcriptional orientation is indicated at the angled end of each gene as in Fig. 1. Gene names are indicated above the X. helleri genes, and orthologs across species are depicted in the same colors. (A) The grey dashed lines from the medaka GPHN gene to the X. helleri GPHN gene indicate that S180r was inserted only within the X. helleri GPHN sequence. Double slanted black lines drawn between genes in stickleback, fugu and Tetraodon indicate that genes or gene clusters on either side of the black slants are not directly linked in that species. (B) Teleost SWS2 and LWS opsins are depicted in blue and red. The black box encompassing SWS2 and LWS opsins across all species represents the organization of these genes in the common vertebrate ancestor. Black dashed lines connecting genes in both (A) and (B) represent the absence of that gene in that particular species.
Watson et al. BMC Evolutionary Biology 2010 10:87 doi:10.1186/1471-2148-10-87