Evolutionary Biology

A Plant Perspective
 
 
Oxford University Press
  • erschienen am 11. September 2018
  • |
  • 360 Seiten
 
E-Book | PDF mit Adobe DRM | Systemvoraussetzungen
978-0-19-088268-6 (ISBN)
 
Many of the characteristics that distinguish plants from other living organisms can be traced to their bacterial origin early in the history of life. These features-such as a multicellular haploid life stage, prevalent hermaphroditism, self-fertilization, and general dependence on biotic and abiotic vectors for reproduction-stem directly from the plant's ability to obtain energy from the sun. This novel mode of energy capture had far-ranging implications for plant evolution. It not only fueled the tremendous diversification of life on Earth that followed, but also had far-ranging implications for the evolution of photosynthetic microorganisms and eventually for land plants. Understanding the evolutionary processes for the proliferation and diversification of plants requires an appreciation of their unique biological features. While the processes of mutation, selection, genetic drift, and gene flow remain the same for both plants and animals, there are specific characteristics of plants that modify the way their evolution is implemented. Unique traits of plants affect everything from the fate of mutations, through exposure to selection in a haploid life phase, to the distribution of genetic variation within populations, and ultimately the rates and patterns of diversification. This book examines the origins of the unique evolutionary features of plants, as well as their implications for evolutionary processes. Author Mitchell B. Cruzan provides contemporary discussion of subjects including population genetics, phylogeography, phylogenetics, ecological genetics, and genomics. The book fills a need for modern coverage of these topics, all of which are essential to a wide range of advanced courses in plant biology.
  • Englisch
  • Oxford
  • |
  • USA
246
  • 98,50 MB
978-0-19-088268-6 (9780190882686)
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Mitchell B. Cruzan is Professor of Biology at Portland State University. He conducts research on the processes of adaptation and speciation in plants. Dr. Cruzan's research currently focuses on the ecological genomics of seed dispersal, invasive species, and processes of mutation accumulation in plants.
Preface Introduction Origins of Diversity 1. Origin of Plant Life 2. Diversification of Land Plants Mechanisms of Diversification 3. Origins of Variation 4. Distribution of Genetic Variation 5. Selection Patterns of Diversity 6. Phenotypic Variation 7. Quantifying Phenotypes 8. Intraspecific Variation Process of Diversification 9. Reproduction 10. Reproductive Isolation and Hybridization 11. Speciation and Diversification Definitions of Variables Definitions of Terms Literature Cited Index

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