natural hybridization and evolution

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Natural Hybridization And Evolution

Author : Michael L. Arnold
ISBN : 0195356683
Genre : Science
File Size : 49. 58 MB
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This study draws on data from numerous sources that support the paradigm of natural hybridization as an important evolutionary process. The review of these data results in a challenge to the framework used by many evolutionary biologists, which sees the process of natural hybridization as maladaptive because it represents a violation of divergent evolution. In contrast, this book presents evidence of a significant role for natural hybridization in furthering adaptive evolution and evolutionary diversification in both plants and animals.

Divergence With Genetic Exchange

Author : Michael L. Arnold
ISBN : 9780191038914
Genre : Science
File Size : 62. 93 MB
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The study of genetic exchange resulting from natural hybridization, horizontal gene transfer, and viral recombination has long been marked by controversy between researchers holding different conceptual frameworks. Those subscribing to a doctrine of 'species purity' have traditionally been reluctant to recognise inferences suggesting anything other than a marginal role for non-allopatric divergence leading to gene transfer between different lineages. However, an increasing number of evolutionary biologists now accept that there is a growing body of evidence indicating the existence of non-allopatric diversification across many lineages and all domains of biological diversity. Divergence with Genetic Exchange investigates the mechanisms associated with evolutionary divergence and diversification, focussing on the role played by the exchange of genes between divergent lineages, a process recently termed 'divergence-with-gene-flow'. Although the mechanisms by which such divergent forms of life exchange genomic material may differ widely, the outcomes of interest - adaptive evolution and the formation of new hybrid lineages - do not. Successive chapters cover the history of the field, detection methodologies, outcomes, implications for conservation programs, and the effects on the human lineage associated with the process of genetic transfer between divergent lineages. This research level text is suitable for senior undergraduate and graduate level students taking related courses in departments of genetics, ecology and evolution. It will also be of relevance and use to professional evolutionary biologists and systematists seeking a comprehensive and authoritative overview of this rapidly expanding field.

Evolution Through Genetic Exchange

Author : Michael L Arnold
ISBN : 9780198570066
Genre : Science
File Size : 60. 66 MB
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More and more data indicate that evolution has resulted in lineages consisting of mosaics of genes derived from different ancestors. It is therefore becoming increasingly clear that the tree is an inadequate metaphor of evolutionary change. In this book, Arnold promotes the 'web-of-life' metaphor as a more appropriate representation of evolutionary change in all lifeforms.

Reticulate Evolution And Humans

Author : Michael L. Arnold
ISBN : 9780199539581
Genre : Science
File Size : 74. 39 MB
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This book describes the important role that the transfer of genes between organisms has played during the origin and evolution of humans, and the evolution of organisms on which the human species depends for shelter, sustenance and companionship.

Essential Readings In Evolutionary Biology

Author : Francisco J. Ayala
ISBN : 9781421413051
Genre : Science
File Size : 78. 64 MB
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Traces scholarly thought from the nineteenth-century birth of evolutionary biology to the mapping of the human genome through forty-eight essays, arranged in chronological order, each preceded by a one-page essay that explains the significance of the chosen work.

Endless Forms

Author : Daniel J. Howard
ISBN : 0195109015
Genre : Science
File Size : 43. 9 MB
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This volume presents the newest findings on speciation, bringing readers up to date on species concepts, modes of speciation, the nature of reproductive barriers. Topics include the forces that drive divergence, the genetics of reproductive isolation, and hybrid zones.

Monocots Systematics And Evolution

Author : Karen L Wilson
ISBN : 9780643099296
Genre : Science
File Size : 49. 47 MB
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Monocots: Systematics and Evolution presents leading work from around the world on non-grass monocotyledons and includes reviews and current research into their comparative biology, phylogeny and classification. The papers are based on presentations at the Second International Conference on the Comparative Biology of the Monocotyledons, Monocots II, held in Sydney, Australia in late 1998. Many were subsequently updated or extended to take into account new information. All 72 papers have been peer-reviewed.

Introgression From Genetically Modified Plants Into Wild Relatives

Author : Hans C. M. den Nijs
ISBN : 9780851998169
Genre : Science
File Size : 37. 9 MB
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Hybridization, transgene, crop, gene flow, resistant.

Evolutionary Biomechanics

Author : Graham Taylor
ISBN : 9780191009280
Genre : Science
File Size : 49. 51 MB
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Evolutionary biomechanics is the study of evolution through the analysis of biomechanical systems. Its unique advantage is the precision with which physical constraints and performance can be predicted from first principles. Instead of reviewing the entire breadth of the biomechanical literature, a few key examples are explored in depth as vehicles for discussing fundamental concepts, analytical techniques, and evolutionary theory. Each chapter develops a conceptual theme, developing the underlying theory and techniques required for analyses in evolutionary biomechanics. Examples from terrestrial biomechanics, metabolic scaling, and bird flight are used to analyse how physics constrains the design space that natural selection is free to explore, and how adaptive evolution finds solutions to the trade-offs between multiple complex conflicting performance objectives. Evolutionary Biomechanics is suitable for graduate level students and professional researchers in the fields of biomechanics, physiology, evolutionary biology and palaeontology. It will also be of relevance and use to researchers in the physical sciences and engineering.

Genetically Modified Pest Protected Plants

Author : Committee on Genetically Modified Pest-Protected Plants
ISBN : 9780309069304
Genre : Technology & Engineering
File Size : 79. 52 MB
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This book explores the risks and benefits of crops that are genetically modified for pest resistance, the urgency of establishing an appropriate regulatory framework for these products, and the importance of public understanding of the issues. The committee critically reviews federal policies toward transgenic products, the 1986 coordinated framework among the key federal agencies in the field, and rules proposed by the Environmental Protection Agency for regulation of plant pesticides. This book provides detailed analyses of: Mechanisms and results of genetic engineering compared to conventional breeding for pest resistance. Review of scientific issues associated with transgenic pest-protected plants, such as allergenicity, impact on nontarget plants, evolution of the pest species, and other concerns. Overview of regulatory framework and its use of scientific information with suggestions for improvements.

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