Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia, USA.|Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia, USA.|Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia, USA.|Department of Computer Science, University of Miami, Coral Gables, Florida, USA.|Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia, USA. peter@uetz.us.