Fig. 4
Molecular evolution of genes associated with cichlid innovations. a Strength of natural selection on genes involved in tooth and bone (jaw) development, coloration and colour vision (cone-opsins) in comparison to the genome-wide pattern represented by the remaining anchored loci. b Proportion of variable sites directed into the chromophore-binding pocket of cone-opsin genes. Shaded bars represent the subset of amino acid substitutions that result in changes in polarity. c Species partitions used in Clade C model (CmC) tests according to phylogeny, ecology, or life history traits. Gene names are shown under the CmC models with the highest explanatory power (lowest AIC) for both phylogeny- and ecology/life-history-based partitions. LT, Lake Tanganyika; Haplo., Haplochromini
