Surfing with the tunicates into the post-genome era

This year is the centenary of Edward G. Conklin's signal findings in embryology: the elucidation of complete cell lineages and the discovery of localized maternal determinants. Conklin used ascidian embryos to elucidate universal principles in embryology. A century later, ascidians, or sea squirts, have not only entered the postgenome era, but in many ways are leading the way to the promise of a systems-level understanding of complex processes such as notochord formation, neurogenesis, and even behavior.