Fig. 2
From: Gene loss, adaptive evolution and the co-evolution of plumage coloration genes with opsins in birds
Syntenic patterns of the PARA and PARIE pineal opsins in mammals and birds. For each species we list the genes adjacent to PARA and PARIE and indicate when they are absent in genome sequences with a red cross. Blue arrow indicates that the region experienced an inversion. The numbers identify each species: 1. Carolina anole (Anolis carolinensis), 2. Platypus (Ornithorhynchus anatinus), 3. Tasmanian devil (Sarcophilus harrisii), 4. Human (Homo sapiens), 5. Chicken (Gallus gallus), 6. Zebra finch (Taeniopygia guttata), 7. Opossum (Monodelphis domestica), 8. African elephant (Loxodonta africana) and 9. Turkey (Meleagris gallopavo)