Fig 1. Chromosomal distribution of the solitary genes in Muridae.

Solitary genes for Mus musculus (GRCm38.p1) and Rattus norvegicus (RGSC 3.4) are indicated in light green if intact, in dark green if pseudogenized. Grey dashed lines connect each solitary gene with its ortholog. Yellow and orange squares, amplified below the chromosomal diagram of the corresponding species, show pairs of solitary genes that (based on annotation) retain a conserved synteny in Muridae (while a non-annotated, neighboring odorant receptor gene is present for Olr390). The distance (measured in Mb) between genes of each gene pair is annotated. Chromosome bands represent Giemsa staining.