Fig. 3

Aberrantly divergent sand rat proteins are frequently encoded by genes in GC-rich islands. Each panel shows one mouse chromosome (scale in Mb) to which the locations of sand rat orthologues are mapped. All analyzed sand rat genes are displayed as dots plotted according to the midpoint position of their corresponding mouse orthologue. The position of each dot on the y-axis shows the difference in adjusted Sneath value between the sand rat and mouse orthologues. Pink lines indicate locations of GC-rich regions identified previously [3, 5]. ‘Clusters’ of aberrantly divergent proteins with more than two proteins mapped to regions less than 1 Mb apart are marked with open red boxes