Simultaneous expression of UV and violet SWS1 opsins expands the visual palette in a group of freshwater snakes.
E. Hauzman, M. E. Pierotti, N. Bhattacharyya, J. H. Tashiro, C. A. Yovanovich, P. F. Campos, D. F. Ventura, B. Chang
This study identifies two functionally distinct SWS1 opsins in Helicops snakes, enabling UV and violet vision, and links this to improved visual acuity and chromatic discrimination.
bioRxiv · Sep 7, 2021Evolutionary Biology