Ray Vision (IMAGE)

SMBE Journals (Molecular Biology and Evolution and Genome Biology and Evolution)

Ray Vision

Caption

All cartilaginous fishes, similar to the marine mammals, have lost the SWS1 and SWS2 opsin genes. Sharks and rays do contain both rod and cone photoreceptors; however rays were found to possess two cone opsin genes.

Credit

Nathan Hart, Macquarie University

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