Syntheny analysis of Monosiga brevicollis (MonBre) and Salpingoeca rosetta (SalRos) CCA gene loci. Twenty flanking genes upstream and downstream of the focal CCA genes were taken from gene annotations. Orthologs were detected using proteinortho (setting -sim to 0.8). Boxed Accession numbers and colored shades indicate homologous genes. While the order is dispersed, the eCCA loci share 6 orthologous genes while the aCCA loci only share one. Numbers in boxes indicate the number of genes that show no homology to genes in the corresponding loci.