Tracing the evolution of vision

The function of the visual photopigment rhodopsin and its action in the retina to facilitate vision is well understood. However, there remain questions about other biological functions of this family of proteins (opsins) and this has ramifications for our understanding of several evolutionary pathways. Now, an international research team has shown there are other functions of opsin outside vision and this provides insights into how the eye evolved.


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Source: ScienceDaily