title: Regulatory evolution and the origin of the bilaterians.
abstract: The adult body plan of bilaterians is achieved by imposing regional specifications on pluripotential cells. The establishment of spatial domains is governed in part by regulating expression of transcription factors. The key to understanding bilaterian evolution is contingent on our understanding of how the regulation of these transcription factors influenced bilaterian stem-group evolution.
authors.affiliation: Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Peterson
authors.forename: E H
authors.initials: EH
authors.lastname: Davidson
mesh_terms: D000818:Animals; D005075:Biological Evolution; D019521:Body Patterning / Q000235:genetics*; D004625:Embryo, Nonmammalian; D005786:Gene Expression Regulation; D005801:Genes, Homeobox; D007448:Invertebrates / Q000145:classification* / Q000235:genetics*; D010802:Phylogeny; D014157:Transcription Factors / Q000235:genetics
chemical_list: D014157:Transcription Factors