Anchor genes. Main anchor genes used to identify syntenic regions across species. DUX genes coloured yellow, anchor genes in black. Cphx as a marker of Duxbl/DUXB duplication shown in green. Gene sizes and intergenic spacing not drawn to scale. ENSEMBL access information: Human Cphx 10q processed transcript (ENSG00000230091); Human Cphx-like 16q protein coding (ENSG00000232078); Mouse CJ057 (ENSG00000021867); Human CJ057 (ENSG00000133678).