Fascinating article! though much terminology. I think the gist is: > the mouse Pax6 gene ... is capable of inducing ... eyes in Drosophila. [Pax6] can initiate

Fascinating article! though much terminology. I think the gist is: > the mouse Pax6 gene ... is capable of inducing ... eyes in Drosophila. [Pax6] can initiate eye development both in insects and mammals. > transcription factors can control ... any target gene ..., [therefore] there are no functional constraints linking Pax6 to eye development. ... Therefore, the link between Pax6 and so to eye development must simply be a consequence of a common evolutionary history. i.e. not parallel evolution of Pax6 > It's more like a single origin for major photosensitive proteins, and one origin per major eye type. Since our latest common ancestor with octopii lacks camera eyes, doesn't this indicate more than one origin for this major eye type?