Fig. 15

Eyes induced to develop in unusual locations in a fly (Drosophila), such as on the head near the normal eye, on the antenna, and next to the wing (arrows) by experimentally expressing the eyeless (Pax6) gene. Using the Pax6 gene from a mouse has a similar result, indicating that the gene in both species is very similar and was probably inherited in both lineages from a distant common ancestor. From Halder et al. (1995a), reproduced by permission of the American Association for the Advancement of Science