Embryonic developmental pattern in which the mouth does not form from the blastopore but from a second opening: includes echinoderms and chordates. Contrasts with morphogenesis in protostome phyla which include annelids, molluscs and arthropods. The two groups also differ in many aspects of early development including the pattern of early cleavage and the stage at which blastomeres become committed in differentiation; in deuterostomes the early blastomeres are equipotent whereas in protostomes there is earlier patterning and commitment to form particular cell lineages.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Deuterostome — Deuterostomes Temporal range: Late Ediacaran – Recent …   Wikipedia

  • deuterostome — noun Etymology: New Latin Deuterostomia, group name, from deuter + Greek stoma mouth more at stomach Date: 1950 any of a major division (Deuterostomia) of the animal kingdom that includes the bilaterally symmetrical animals (as the chordates)… …   New Collegiate Dictionary

  • deuterostome — n. [Gr. deuteros, second; stoma, mouth] True coelomates with radial cleavage of the egg, the blastopore becoming the anus, the coelom formed by enterocoely, including Echinodermata, Chaetognatha, Hemicordata and Chordata; see protostome …   Dictionary of invertebrate zoology

  • deuterostome — /dooh teuhr euh stohm , dyooh /, n. 1. Embryol. a mouth that develops separately from the blastopore. 2. Taxonomy. any member of the phyla (Chordata, Hemichordata, Echinodermata, Chaetognatha) in which the anus appears first, developing at or… …   Universalium

  • deuterostome — noun Any of very many animals, of the superphylum Deuterostomia, including the starfish and very many wormlike animals …   Wiktionary

  • deuterostome — deu·tero·stome (dooґtər o stōm″) an animal belonging to the Deuterostomia …   Medical dictionary

  • deuterostome — [ dju:tərəʊstəʊm] noun Zoology an organism whose mouth develops from a secondary embryonic opening, such as a vertebrate. Compare with protostome. Origin 1950s: from deutero + Gk stoma mouth …   English new terms dictionary

  • deuterostome — deu·ter·o·stome …   English syllables

  • deuterostome — deu•ter•o•stome [[t]ˈdu tər əˌstoʊm, ˈdyu [/t]] n. 1) ivt dvl a mouth that develops separately from the blastopore 2) ivt bio an animal with this form of development, as an echinoderm or chordate • Etymology: 1945–50 …   From formal English to slang

  • deuterostome — I. ˈ ̷ ̷ ̷ ̷ ̷ ̷ˌstōm adjective Etymology: New Latin Deuterostomia : of or relating to Deuterostomia II. noun ( s) : an animal belonging to the group Deuterostomia * * * /dooh teuhr euh stohm , dyooh / …   Useful english dictionary

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