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. 2020 Feb 3;12(2):3906–3916. doi: 10.1093/gbe/evaa015

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© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 5. — —Synopsis of opsin evolution. (A) Phylogenetic distribution of canonical opsin in Eumetazoans. (B) Duplication pattern of opsin genes in Eumetazoa. Dashed lines indicate lineage-specific losses.