Isbn: 9783642487477 - molecular evolution: evidence for monophyly of metazoa: 19 (12 risultati)

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Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - This volume focuses on the origin of multicellular animals, Metazoa. Fossil records are scarce and morphological, biochemical or cytological evidence has not demonstrated an unequivocal phylogeny. Therefore, the question remains: Did Metazoa evolve from Protozoa only once, or several times Is the origin of animals monophyletic or polyphyletic Especially the relationships between the existing lower metazoan phyla, particularly the Porifera, are uncertain. In addition, phylogenetic analyses of nucleotide sequences of small and large ribosomal RNA also revealed no conclusive results with regard to the evolu tionary dichotomy of diploblasts (Porifera, Cnidaria and Ctenophora) and triploblasts in general and the diploblastic lineages in particular. During the evolution of unicellular eukaryotes to multicellular animals, complex molecular systems were established which allow a tuned and control led interaction between cells among each other, and cells and extracellular molecules. Hence, cell surface-associated adhesion and growth hormone receptors, as well as their corresponding extracellular ligands, have evolved. In addition, transcription factors had to be introduced that control gene func tions in the variety of cell types in developing and adult organisms.…

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Taschenbuch. Condizione: Neu. Molecular Evolution: Evidence for Monophyly of Metazoa | Werner E. G. Müller | Taschenbuch | Progress in Molecular and Subcellular Biology | xi | Englisch | 2012 | Springer | EAN 9783642487477 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu. …

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Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume focuses on the origin of multicellular animals, Metazoa. Fossil records are scarce and morphological, biochemical or cytological evidence has not demonstrated an unequivocal phylogeny. Therefore, the question remains: Did Metazoa evolve from Protozoa only once, or several times Is the origin of animals monophyletic or polyphyletic Especially the relationships between the existing lower metazoan phyla, particularly the Porifera, are uncertain. In addition, phylogenetic analyses of nucleotide sequences of small and large ribosomal RNA also revealed no conclusive results with regard to the evolu tionary dichotomy of diploblasts (Porifera, Cnidaria and Ctenophora) and triploblasts in general and the diploblastic lineages in particular. During the evolution of unicellular eukaryotes to multicellular animals, complex molecular systems were established which allow a tuned and control led interaction between cells among each other, and cells and extracellular molecules. Hence, cell surface-associated adhesion and growth hormone receptors, as well as their corresponding extracellular ligands, have evolved. In addition, transcription factors had to be introduced that control gene func tions in the variety of cell types in developing and adult organisms. 204 pp. Englisch. …

Kartoniert / Broschiert. Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. The first book to address this topicOf interest to all evolutionary biologistsThis volume concentrates on the origin of multicellular animals, Metazoa. Until now, no unequivocal phylogeny has been produced. Therefore, the questions remain: Did Metaz.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This volume concentrates on the origin of multicellular animals, Metazoa. Until now, no unequivocal phylogeny has been produced. Therefore, the questions remain: Did Metazoa evolve from the Protozoa only once, or several times Is the origin of animals monophyletic or polyphyletic Especially the relationships between the existing lower metazoan phyla, particularly the Porifera (sponges) are uncertain. Based on sequence data of genes typical for multicellularity it is demonstrated that all Metazoa, including Porifera, should be placed into the kingdom Animalia together with the Eumetazoa. Therefore it is most likely that all animals are of monophyletic origin.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 204 pp. Englisch.…