New perspectives on eye evolution - PubMed (original) (raw)
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New perspectives on eye evolution
G Halder et al. Curr Opin Genet Dev. 1995 Oct.
Abstract
The highly complex eyes of vertebrates, insects and molluscs have long been considered to be of independent evolutionary origin. Recently, however, Pax-6, a highly conserved transcription factor, has been identified as a key regulator of eye development in both mammals and flies. Homologues of Pax-6 have also been identified in species from other phyla, including molluscs. The wide variety of eyes in the animal kingdom may, therefore, have evolved from a single ancestral photosensitive origin.
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