Figure 6From: Positive Darwinian selection in the singularly large taste receptor gene family of an ‘ancient’ fish, Latimeria chalumnaeGenomic structure and location of Latimeria v1r and t2r genes. Panel A, phylogenetic origin of introns in the V1R/ora family. The subtree is taken from Figure 3; numbers indicate % branch support; black diamonds, intron gains. Panel B, comparison of the Latimeria V1R1/2 and V1R3/4 clades with the ORA1/2 and ORA3/4 gene pairs of teleosts. Numbers correspond to gene names; magenta triangles, Latimeria v1r genes; grey triangles, zebrafish genes; triangle pointing left, + strand; triangle pointing right, - strand; all gene distances drawn to scale. Panel C, Latimeria t2r gene clusters, full length of contigs is shown; numbers correspond to gene names; magenta triangles, Latimeria t2r genes; triangle pointing left, + strand; triangle pointing right, - strand; all gene distances drawn to scale. In comparison with an independent assembly [20], two contigs containing three and six genes (T2R25, 22, 42 and T2R29, 58, 28, 31, 32, 66, respectively), merge into a larger cluster of nine genes.Back to article page