Fig. 4
From: Divergent genes in gerbils: prevalence, relation to GC-biased substitution, and phenotypic relevance
Mutational patterns at synonymous sites for orthologous genes from four rodent species. Genes encoding aberrantly divergent proteins are highlighted with red dots. a Graph comparing weak-to-strong (dSws) and strong-to-weak (dSsw) synonymous mutation rates for sand rat genes. The ‘chimney’ shape indicates that many sand rat genes have undergone GC biased nucleotide changes; many of the aberrantly divergent proteins are in this category. Eighteen sand rat genes (including 12 aberrantly divergent genes) with dSws and/or dSsw values above 2 have been artificially converted to dSws = 2 and/or dSsw = 2 to give a more comprehensive view. b Graph comparing weak-to-strong (dSws) and strong-to-weak (dSsw) synonymous mutation rates for Mongolian jird genes. The ‘chimney’ shape indicates GC bias; most aberrantly divergent proteins are in this category. Ten Mongolian jird genes (including two aberrantly divergent genes) with dSws and/or dSsw values larger than 2 have been artificially converted to dSws = 2 and/or dSsw = 2. c Graph comparing dSws and dSsw for mouse genes. d Graph comparing dSws and dSsw for rat genes. Photographs from J.F. Mulley and Pixabay with permission