Molecular Evolution: Evidence for Monophyly of Metazoa

Name: Molecular Evolution: Evidence for Monophyly of Metazoa
Brand: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
SKU: 9783642487477
Price: 39357 HUF
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Szerző: Werner E. G. Müller

Nyelv:

Kötés: Puha kötésű

Kiadó: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG

Elérhetőség: Beszállítói készleten

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This volume focuses on the origin of multicellular animals, Metazoa. Fossil records are scarce and m...

Információk a könyvről

Szerző

Werner E. G. Müller

Nyelv

Angol

Kötés

Könyv - Puha kötésű

Kiadva

2012

oldal

189

EAN

9783642487477

ISBN

9783642487477

Enbook ID

06623103

Kiadó

Springer-Verlag Berlin and Heidelberg GmbH & Co. KG

Súly

362

Méretek

170 x 244 x 12

Teljes leírás

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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Molecular Evolution: Evidence for Monophyly of Metazoa

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