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Key Transitions in Animal Evolution

Key Transitions in Animal Evolution PDF Author: Rob Desalle
Publisher: CRC Press
ISBN: 1439854025
Category : Science
Languages : en
Pages : 439

Book Description
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

Key Transitions in Animal Evolution

Key Transitions in Animal Evolution PDF Author: Rob Desalle
Publisher: CRC Press
ISBN: 1439854025
Category : Science
Languages : en
Pages : 439

Book Description
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

The Major Transitions in Evolution

The Major Transitions in Evolution PDF Author: John Maynard Smith
Publisher: Oxford University Press
ISBN: 019850294X
Category : Nature
Languages : en
Pages : 361

Book Description
During evolution there have been several major changes in the way genetic information is organized and transmitted from one generation to the next. These transitions include the origin of life itself, the first eukaryotic cells, reproduction by sexual means, the appearance of multicellular plants and animals, the emergence of cooperation and of animal societies. This is the first book to discuss all these major transitions and their implications for our understanding of evolution.Clearly written and illustrated with many original diagrams, this book will be welcomed by students and researchers in the fields of evolutionary biology, ecology, and genetics.

Animal Evolution

Animal Evolution PDF Author: Claus Nielsen
Publisher: Oxford University Press on Demand
ISBN: 0199606021
Category : Science
Languages : en
Pages : 421

Book Description
Using modern phylogenetic reasoning based on an extensive review of morphology, including ultrastructure, and embryology, each phylum is analysed to ascertain its monophyly and hence its ancestral characters.

Animal Evolution

Animal Evolution PDF Author: Maximilian J. Telford
Publisher: Oxford University Press on Demand
ISBN: 0199549427
Category : Language Arts & Disciplines
Languages : en
Pages : 271

Book Description
Describing and understanding the evolution of the diversity of bodyplans is a major goal of evolutionary biology. Taking a modern, integrated approach to this question, a group of leading researchers describe how modern techniques and disciplines have been combined, resulting in a dramatic renaissance in the study of animal evolution.

Old Questions and Young Approaches to Animal Evolution

Old Questions and Young Approaches to Animal Evolution PDF Author: José M. Martín-Durán
Publisher: Springer
ISBN: 3030182029
Category : Science
Languages : en
Pages : 284

Book Description
Animal evolution has always been at the core of Biology, but even today many fundamental questions remain open. The field of animal ‘evo-devo’ is leveraging recent technical and conceptual advances in development, paleontology, genomics and transcriptomics to propose radically different answers to traditional evolutionary controversies. This book is divided into four parts, each of which approaches animal evolution from a different perspective. The first part (chapters 2 and 3) investigates how new sources of evidence have changed conventional views of animal origins, while the second (chapters 4–8) addresses the connection between embryogenesis and evolution, and the genesis of cellular, tissue and morphological diversity. The third part (chapters 9 and 10) investigates how big data in molecular biology is transforming our understanding of the mechanisms governing morphological change in animals. In closing, the fourth part (chapters 11–13) explores new theoretical and conceptual approaches to animal evolution. ‘Old questions and young approaches to animal evolution’ offers a comprehensive and updated view of animal evolutionary biology that will serve both as a first step into this fascinating field for students and university educators, and as a review of complementary approaches for researchers.

Evolution by Gene Duplication

Evolution by Gene Duplication PDF Author: Susumu Ohno
Publisher: Springer Science & Business Media
ISBN: 364286659X
Category : Medical
Languages : en
Pages : 171

Book Description
It is said that "necessity is the mother of invention". To be sure, wheels and pulleys were invented out of necessity by the tenacious minds of upright citi zens. Looking at the history of mankind, however, one has to add that "Ieisure is the mother of cultural improvement". Man's creative genius flourished only when his mind, freed from the worry of daily toils, was permitted to entertain apparently useless thoughts. In the same manner, one might say with regard to evolution that "natural selection mere(y tnodifted, while redundanry created". Natural selection has been extremely effective in policing alleHe mutations which arise in already existing gene loci. Because of natural selection, organisms have been able to adapt to changing environments, and by adaptive radiation many new species were created from a common ancestral form. Y et, being an effective policeman, natural selection is extremely conservative by nature. Had evolution been entirely dependent upon natural selection, from a bacterium only numerous forms of bacteria would have emerged. The creation of metazoans, vertebrates and finally mammals from unicellular organisms would have been quite impos sible, for such big leaps in evolution required the creation of new gene loci with previously nonexistent functions. Only the cistron which became redun dant was able to escape from the relentless pressure of natural selection, and by escaping, it accumulated formerly forbidden mutations to emerge as a new gene locus.

How Biology Shapes Philosophy

How Biology Shapes Philosophy PDF Author: David Livingstone Smith
Publisher: Cambridge University Press
ISBN: 1107055830
Category : Philosophy
Languages : en
Pages : 367

Book Description
A collection of original essays by major thinkers, addressing how the biological sciences inform and inspire philosophical research.

The Cosmic Zoo

The Cosmic Zoo PDF Author: Dirk Schulze-Makuch
Publisher: Springer
ISBN: 3319620452
Category : Science
Languages : en
Pages : 238

Book Description
Are humans a galactic oddity, or will complex life with human abilities develop on planets with environments that remain habitable for long enough? In a clear, jargon-free style, two leading researchers in the burgeoning field of astrobiology critically examine the major evolutionary steps that led us from the distant origins of life to the technologically advanced species we are today. Are the key events that took life from simple cells to astronauts unique occurrences that would be unlikely to occur on other planets? By focusing on what life does - it's functional abilities - rather than specific biochemistry or anatomy, the authors provide plausible answers to this question. Systematically exploring the various pathways that led to the complex biosphere we experience on planet Earth, they show that most of the steps along that path are likely to occur on any world hosting life, with only two exceptions: One is the origin of life itself – if this is a highly improbable event, then we live in a rather “empty universe”. However, if this isn’t the case, we inevitably live in a universe containing a myriad of planets hosting complex as well as microbial life - a “cosmic zoo”. The other unknown is the rise of technologically advanced beings, as exemplified on Earth by humans. Only one technological species has emerged in the roughly 4 billion years life has existed on Earth, and we don’t know of any other technological species elsewhere. If technological intelligence is a rare, almost unique feature of Earth's history, then there can be no visitors to the cosmic zoo other than ourselves. Schulze-Makuch and Bains take the reader through the history of life on Earth, laying out a consistent and straightforward framework for understanding why we should think that advanced, complex life exists on planets other than Earth. They provide a unique perspective on the question that puzzled the human species for centuries: are we alone?

On the Wing

On the Wing PDF Author: Dr. David E. Alexander
Publisher: Oxford University Press, USA
ISBN: 0199996776
Category : Science
Languages : en
Pages : 225

Book Description
"On the Wing is the first book to take a comprehensive look at the evolution of flight in all four groups of powered flyers: insects, pterosaurs, birds, and bats."--Book jacket.

The Major Transitions in Evolution Revisited

The Major Transitions in Evolution Revisited PDF Author: Brett Calcott
Publisher: MIT Press
ISBN: 0262294532
Category : Science
Languages : en
Pages : 330

Book Description
Drawing on recent advances in evolutionary biology, prominent scholars return to the question posed in a pathbreaking book: how evolution itself evolved. In 1995, John Maynard Smith and Eörs Szathmáry published their influential book The Major Transitions in Evolution. The "transitions" that Maynard Smith and Szathmáry chose to describe all constituted major changes in the kinds of organisms that existed but, most important, these events also transformed the evolutionary process itself. The evolution of new levels of biological organization, such as chromosomes, cells, multicelled organisms, and complex social groups radically changed the kinds of individuals natural selection could act upon. Many of these events also produced revolutionary changes in the process of inheritance, by expanding the range and fidelity of transmission, establishing new inheritance channels, and developing more open-ended sources of variation. Maynard Smith and Szathmáry had planned a major revision of their work, but the death of Maynard Smith in 2004 prevented this. In this volume, prominent scholars (including Szathmáry himself) reconsider and extend the earlier book's themes in light of recent developments in evolutionary biology. The contributors discuss different frameworks for understanding macroevolution, prokaryote evolution (the study of which has been aided by developments in molecular biology), and the complex evolution of multicellularity.