Distribution of individual orthologous genes across paralogous chicken and lamprey chromosomes. (A) Orthologs from chicken chromosomes GG14 and GG18 are distributed across five lamprey LGs (the complete set of lamprey linkage groups with significant enrichment for orthologs on these two chicken chromosomes). (B) Orthologs from these LGs are distributed across GG14 and GG18 (the complete set of chicken chromosomes with significant enrichment for orthologs on these lamprey linkage groups). (C) Orthologies plotted in A, with retained chicken paralogs denoted by bold lines. (D) Orthologies plotted in B, with retained lamprey paralogs denoted by bold lines. Roman numerals designate lamprey LGs. Asterisks mark the location of four conserved paralogs that are derived from a single gene located on ancI. Brackets denote presumptive ancestral linkages that are supported by the distribution of paralogous genes.
