Fig. 5
From: A Genetic Perspective on Eye Evolution: Gene Sharing, Convergence and Parallelism
Transcription factors that are used for lens development and activation of crystallin promoters in different species. Many more transcription factors are used, of course, but these are critically important and serve as examples of the convergent evolution of the recruitment and expression of nonhomologous crystallin genes in different species. Reprinted by permission from GENE SHARING AND EVOLUTION: THE DIVERSITY OF PROTEIN FUNCTIONS by Joram Piatigorsky, p. 85; Cambridge, Mass.: Harvard University Press, Copyright © 2007 by the President and Fellows of Harvard College