Figure 1.

(a) "Eyes of the world" by Paul Freed. When isolated from other aspects of head morphology, the remarkable conservation of eye morphology among animals is striking. Reproduced with permission. (b) Photos of eyes of various vertebrates shown above their gene-expression profiles. Data taken from Chan et al. [3].

Malone and Oliver Journal of Biology 2009 8:32   doi:10.1186/jbiol131
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