Figure 22. . Phylogeny of vertebrate cone and rod opsins.

Figure 22.

Phylogeny of vertebrate cone and rod opsins. Phylogeny of the gene families of vertebrate visual pigments (i.e. cone opsins and rhodopsin): LWS, SWS1, SWS2, RHB/RH2 and RHA/RH1. Posterior probability values (as percentages) are indicated at the base of each node. The scale bar indicates the number of nucleotide substitutions per site. Branch lengths reflect evolutionary distances. From Collin et al (10).

From: Evolution of Phototransduction, Vertebrate Photoreceptors and Retina

Cover of Webvision
Webvision: The Organization of the Retina and Visual System [Internet].
Kolb H, Fernandez E, Nelson R, editors.
Salt Lake City (UT): University of Utah Health Sciences Center; 1995-.

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