Contents

03 October 2006
Vol 2006, Issue 355

About The Cover

Cover image expansion

COVER This week's Focus Issue, published to complement the Science Special Issue on genomic evolution, contains an Editorial Guide on how regulatory networks allow genes to control the development of complex organisms as well as three Perspectives illustrating specific examples. The image depicts a Drosophila superimposed on the Wnt signaling pathway. [Image: Christopher Bickel, AAAS]