You are currently viewing the abstract.
View Full TextLog in to view the full text
AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.
More options
Download and print this article for your personal scholarly, research, and educational use.
Buy a single issue of Science for just $15 USD.
Abstract
The dissection of molecular networks vital to cellular life can provide important hints about optimal network design principles. However, these hints can become conclusive only if one can determine that natural selection has molded a network's structure. I illustrate the importance of thorough studies of network evolution with two recent examples, one from genome-scale networks, the other from small transcriptional regulation circuits.