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Molecular Evolution Towards The Origin Of Metazoa
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Book Synopsis Molecular Evolution: Towards the Origin of Metazoa by : Werner E.G. Müller
Download or read book Molecular Evolution: Towards the Origin of Metazoa written by Werner E.G. Müller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, new genes and their proteins that revealed striking new insights into the early evolution of multicellular animals have been identified and characterized from members of the lowest metazoan phylum, the porifera (sponges). The unexpected result was that the sequences obtained from sponge displayed high similarity to those found in higher metazoa; in consequence, it was concluded that during the transition from protozoa to metazoa the major structural and regulatory proteins evolved only once. The data gathered are now powerful arguments to establish monophyly of metazoa; in addition, new insights on the evolutionary diversification of metazoa were obtained.
Book Synopsis Molecular Evolution: Evidence for Monophyly of Metazoa by : Werner E.G. Müller
Download or read book Molecular Evolution: Evidence for Monophyly of Metazoa written by Werner E.G. Müller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Molds, Molecules, and Metazoa by : Peter R. Grant
Download or read book Molds, Molecules, and Metazoa written by Peter R. Grant and published by Princeton University Press. This book was released on 2014-07-14 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through an integration of systematics, genetics, and related disciplines, the Modern Synthesis of Evolutionary Biology came into being over fifty years ago. Knowledge of evolution has since been transformed by several revolutions: the way we interpret the fossil record has been radically affected by theories of continental drift and asteroid impacts; the way we classify organisms has been influenced by the development of cladistics. Perhaps the most dramatic revolution has been the explosion in molecular biology of information about the genome. Aiming to capture the excitement of modern evolutionary biology, six prominent scientists here explore important issues and problems in their areas of specialization and identify the most promising directions of future research. The scope of this volume ranges from macroevolutionary patterns in the Precambrian to molecular evolution of the genome. Major themes include the origin and maintenance of variation and the causes of evolutionary change. Chapters on paleontology, ecology, behavior, development, and cell and molecular biology are contributed by Jim Valentine, Graham Bell, Mary Jane West Eberhard, Leo Buss, Marc Kirschner, and Marty Kreitman. The book contains an introductory chapter by John Bonner, whose seminal work is honored here. Originally published in 1992. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Book Synopsis Origin and Evolution of Metazoan Cell Types by : Sally Leys
Download or read book Origin and Evolution of Metazoan Cell Types written by Sally Leys and published by CRC Press. This book was released on 2021-05-23 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of animal diversity is strongly affected by the origin of novel cell and tissue types and their interactions with each other. Understanding the evolution of cell types will shed light on the evolution of novel structures, and in turn highlight how animals diversified. Several cell types may also have been lost as animals simplified – for example did sponges have nerves and lose them? This book reveals the interplay between gains and losses and provides readers with a better grasp of the evolutionary history of cell types. In addition, the book illustrates how new cell types allow a better understanding permitting the discrimination between convergence and homology.
Book Synopsis Molecular Evolution in Metazoa by : Eric Fontanillas
Download or read book Molecular Evolution in Metazoa written by Eric Fontanillas and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on variation in rate of molecular evolution in several metazoan clades. Such variation in molecular rates is difficult to directly assess, and the simplifications or misspecifications included in models of molecular evolution could introduce significant problems in phylogenetic methods (including topology reconstruction, rate tests and molecular dating). However, observed associations between molecular rate and biological traits (e.g. body size or diversification rate) could provide an indirect way to understand molecular processes and to evaluate variation in rate of molecular evolution. In Chapter 2, I explore the effects of priors for molecular rate and divergence times specified in a bayesian molecular dating method. The results show that the use of inappropriate priors could have led to underestimated dates of origin for metazoan in previous studies. In Chapter 3, using comparative approaches, I show that body size could be negatively correlated with rate of mitochondrial evolution. This suggests that the potential small size of early metazoans could have been associated with fast molecular rates. Moreover I show in Chapter 4 that the use of too shallow comparisons could not explain why a previous study fails to detect this relationship. In Chapter 5, a comparative study on mammals suggests that fast diversifying clades should undergo slowdown in their tempo of mitochondrial evolution. Several potential explanations for this relationship are discussed in light of recent findings concerning mitochondrial evolution. Body size and net diversification rate may have important influences on the rate of molecular evolution and therefore must be considered in molecular dating studies. However many other variables could interact directly or via confounding effects with molecular rate and deserve further investigations.
Book Synopsis Molecular Evolution by : Werner E G Muller
Download or read book Molecular Evolution written by Werner E G Muller and published by . This book was released on 1997-11-12 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Evolution by : Melvin Calvin (Chemiker)
Download or read book Chemical Evolution written by Melvin Calvin (Chemiker) and published by . This book was released on 1969 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Evolution and the Origin of Life by : Sidney W. Fox
Download or read book Molecular Evolution and the Origin of Life written by Sidney W. Fox and published by . This book was released on 1977 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Crucible of Creation by : Simon Conway Morris
Download or read book The Crucible of Creation written by Simon Conway Morris and published by Oxford ; New York : Oxford University Press. This book was released on 1998 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paleontologist Simon Conway Morris provides a guided tour of the world's richest treasure trove of fossils--a fantastically rich deposit of bizarre and bewildering Cambrain fossils, located in Western Canada. 4 plates. 90 linecuts.
Book Synopsis From DNA to Diversity by : Sean B. Carroll
Download or read book From DNA to Diversity written by Sean B. Carroll and published by John Wiley & Sons. This book was released on 2013-04-25 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this landmark work, the author team led by Dr. Sean Carroll presents the general principles of the genetic basis of morphological change through a synthesis of evolutionary biology with genetics and embryology. In this extensively revised second edition, the authors delve into the latest discoveries, incorporating new coverage of comparative genomics, molecular evolution of regulatory proteins and elements, and microevolution of animal development. An accessible text, focusing on the most well-known genes, developmental processes and taxa. Builds logically from developmental genetics and regulatory mechanisms to evolution at different genetic morphological levels. Adds major insights from recent genome studies, new evo-devo biology research findings, and a new chapter on models of variation and divergence among closely related species. Provides in-depth focus on key concepts through well-developed case studies. Features clear, 4-color illustrations and photographs, chapter summaries, references and a glossary. Presents the research of Dr. Carroll, a pioneer in the field and the past president of the Society for Developmental Biology.
Book Synopsis Encyclopedia of Geobiology by : Joachim Reitner
Download or read book Encyclopedia of Geobiology written by Joachim Reitner and published by Springer. This book was released on 2011-03-10 with total page 927 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interplay between Geology and Biology has shaped the Earth from the early Precambrian, 4 billion years ago. Moving beyond the borders of the classical core disciplines, Geobiology strives to identify chains of cause-and-effect and synergisms between the geo- and the biospheres that have been driving the evolution of life in modern and ancient environments. Combining modern methods, geobiological information can be extracted not only from visible remains of organisms, but also from organic molecules, rock fabrics, minerals, isotopes and other tracers. An understanding of these processes and their signatures reveals enormous applied potentials with respect to issues of environment protection, public health, energy and resource management. The Encyclopedia of Geobiology has been designed to act as a key reference for students, researchers, teachers, and the informed public and to provide basic, but comprehensible knowledge on this rapidly expanding discipline that sits at the interface between modern geo- and biosciences.
Book Synopsis Molecular Evolution and the Origin of Life by : Sidney W. Fox
Download or read book Molecular Evolution and the Origin of Life written by Sidney W. Fox and published by . This book was released on 1977 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution of Life written by Syozo Osawa and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly thirty million species of organisms are believed to now live on Earth. In addition to accumulating evidence from classical biology, paleontology and earth science, the recent progress of molecular biology has provided new insights into understanding how present-day organisms have evolved with such tremendous diversity. Molecular biological studies show us that all living forms, including E. coli and human beings, derive from a single ancestor that emerged some 4 billion years ago on Earth. This volume aims to discuss the motifs of organismic evolution from the viewpoints of biogeo-interactions and diversification of the genetic systems. Based on these fundamental understandings, the last section of this volume is devoted to human evolution that includes phylogeny of man as well as evolution of human culture. Such comprehensive discussion will give us a synthesized view of the evolution of life, that is undoubtedly one of the most important problems not only for science but also for human culture in general.
Book Synopsis The Choanoflagellates by : Barry S. C. Leadbeater
Download or read book The Choanoflagellates written by Barry S. C. Leadbeater and published by Cambridge University Press. This book was released on 2015-01-08 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique account of the biology, ecology and evolution of choanoflagellates - the closest, known, living, unicellular relatives of animals.
Book Synopsis Key Transitions in Animal Evolution by : Rob Desalle
Download or read book Key Transitions in Animal Evolution written by Rob Desalle and published by CRC Press. This book was released on 2010-12-07 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tackling one of the most difficult and delicate of the evolutionary questions, this challenging book summarizes the more recent results in phylogenetics and developmental biology that address the evolution of key innovations in metazoans. Divided into three sections, the first considers the phylogenetic issues involving this area of the tree of lif
Download or read book Chemical Evolution written by Paul Rado and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Evolution. Molecular Evolution Towards the Origin of Living Systems on the Earth by :
Download or read book Chemical Evolution. Molecular Evolution Towards the Origin of Living Systems on the Earth written by and published by . This book was released on 1969 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:
