title: The evolution of embryonic patterning mechanisms in animals.
abstract: Animals exhibit an enormous diversity of life cycles and larval morphologies. The developmental basis for this diversity is not well understood. It is clear, however, that mechanisms of pattern formation in early embryos differ significantly among and within groups of animals. These differences show surprisingly little correlation with phylogenetic relationships; instead, many are correlated with ecological factors, such as changes in life histories.
authors.affiliation: Department of Biology, Duke University, Durham, NC 27708-0325, USA. gwray@duke.edu
authors.forename: G A
authors.initials: GA
authors.lastname: Wray
mesh_terms: D000818:Animals; D005075:Biological Evolution; D019521:Body Patterning; D048429:Cell Size; D004463:Ecology; D004625:Embryo, Nonmammalian / Q000196:embryology*; D007814:Larva / Q000254:growth & development; D008018:Life Cycle Stages; D009865:Oocytes / Q000166:cytology