Figure 2

Unexpected low orthology in the vicinity of the V1rb7 gene. PipMaker plot with chained alignments illustrating the contiguous high level of orthology (97–98%) evident upstream and downstream of the musculus V1rb7 gene. Hash marks indicate 1-kb intervals. The lower level of more disrupted synteny is confined to the region encompassing the musculus V1rb7/spretus YUA.5 orthologs, whose synonymous substitution rate (dS) is ~17%, or approximately 8.5-fold more diverged than expected. This gene pair might have been subject to gene conversion in one or both lineages.