Chromosomal Evolution in Higher Plants PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Chromosomal Evolution in Higher Plants PDF full book. Access full book title Chromosomal Evolution in Higher Plants by George Ledyard Stebbins. Download full books in PDF and EPUB format.
Author: George Ledyard Stebbins
Publisher:
ISBN: 9780713122886
Category : Chromosomes
Languages : en
Pages : 0
Get Book Here
Book Description
Author: George Ledyard Stebbins
Publisher:
ISBN: 9780713122886
Category : Chromosomes
Languages : en
Pages : 0
Get Book Here
Book Description
Author: Donald A. Levin
Publisher: Oxford University Press, USA
ISBN: 9780195138603
Category : Science
Languages : en
Pages : 244
Get Book Here
Book Description
Genome, heterozygosity, polyploidy, phenotype, genes, euploid, aneuploid.
Author: Theodosius Dobzhansky
Publisher: W H Freeman & Company
ISBN: 9780716705727
Category : Évolution
Languages : en
Pages : 572
Get Book Here
Book Description
Looks at the nature of evolution, the genetic structure of populations, hereditary variation, natural selection, and the relationship between populations, races, and species
Author: George Ledyard Stebbins
Publisher: University Park Press
ISBN: 9780713122886
Category : Chromosomes
Languages : en
Pages : 216
Get Book Here
Book Description
Author: Martin A. Lysak
Publisher: Frontiers Media SA
ISBN: 2889714004
Category : Science
Languages : en
Pages : 221
Get Book Here
Book Description
Author: Walter H. Lewis
Publisher: Springer Science & Business Media
ISBN: 1461330696
Category : Medical
Languages : en
Pages : 576
Get Book Here
Book Description
Polyploidy as a dramatic mutational event in the process of evolution has wide implications in nature and for the generation of new and improved crops. The three day Conference on POLYPLOIDY: BIOLOGICAL RELEVANCE focused on three aspects of this natural phenomenon: the first emphasized the characteristics of polyploidy, the second described the occurrence of polyploidy among plants and animals, and the third considered past and future areas of both fundamental and pragmatic research that involve polyploidy. New information relative to origin, cytogenetics, ecology, physiology, biochemistry, and populational studies stress the need to reexamine current views on the origins of polyploidy and its significance among both plants and animals. There are major differences in the occurrence of polyploidy between. plant groups and it is proving a much more common event among bisexual vertebrates than heretofore considered possible. Crop development and improvement must utilize approaches based fundamentally on more natural systems; in fact future research should focus more on polyploidy as a natural phenomenon that needs study at all levels of endeavor from field-oriented populational aspects to sophisticated molecular analyses and genome manipulations. This volume provides a summary of current knowledge of polyploidy pertinent to botanists, zoologists, and agriculturists who are interested in the evolution o~natural systems and who are concerned with the contribution that crop improvement can make to human well-being. Walter H. Lewis St. Louis, Missouri October, 1979 v ACKNOWLEDGMENTS The Host Committee thanks all speakers and moderators for their generous contribution to the Conference and to this volume.
Author: Jean-Nicolas Volff
Publisher: Karger Medical and Scientific Publishers
ISBN: 3805584911
Category : Medical
Languages : en
Pages : 155
Get Book Here
Book Description
Recent major advances in the field of comparative genomics and cytogenomics of plants, particularly associated with the completion of ambitious genome projects, have uncovered astonishing facets of the architecture and evolutionary history of plant genomes. The aim of this book was to review these recent developments as well as their implications in our understanding of the mechanisms which drive plant diversity. New insights into the evolution of gene functions, gene families and genome size are presented, with particular emphasis on the evolutionary impact of polyploidization and transposable elements. Knowledge on the structure and evolution of plant sex chromosomes, centromeres and microRNAs is reviewed and updated. Taken together, the contributions by internationally recognized experts present a panoramic overview of the structural features and evolutionary dynamics of plant genomes.This volume of Genome Dynamics will provide researchers, teachers and students in the fields of biology and agronomy with a valuable source of current knowledge on plant genomes.
Author: Pamela Soltis
Publisher: Springer Science & Business Media
ISBN: 3642314414
Category : Science
Languages : en
Pages : 416
Get Book Here
Book Description
Polyploidy – whole-genome duplication (WGD) – is a fundamental driver of biodiversity with significant consequences for genome structure, organization, and evolution. Once considered a speciation process common only in plants, polyploidy is now recognized to have played a major role in the structure, gene content, and evolution of most eukaryotic genomes. In fact, the diversity of eukaryotes seems closely tied to multiple WGDs. Polyploidy generates new genomic interactions – initially resulting in “genomic and transcriptomic shock” – that must be resolved in a new polyploid lineage. This process essentially acts as a “reset” button, resulting in genomic changes that may ultimately promote adaptive speciation. This book brings together for the first time the conceptual and theoretical underpinnings of polyploid genome evolution with syntheses of the patterns and processes of genome evolution in diverse polyploid groups. Because polyploidy is most common and best studied in plants, the book emphasizes plant models, but recent studies of vertebrates and fungi are providing fresh perspectives on factors that allow polyploid speciation and shape polyploid genomes. The emerging paradigm is that polyploidy – through alterations in genome structure and gene regulation – generates genetic and phenotypic novelty that manifests itself at the chromosomal, physiological, and organismal levels, with long-term ecological and evolutionary consequences.
Author: Andreas Houben
Publisher: MDPI
ISBN: 3038977861
Category : Science
Languages : en
Pages : 254
Get Book Here
Book Description
Supernumerary B chromosomes (Bs) are dispensable genetic elements found in thousands of species of plants and animals, and some fungi. Since their discovery more than a century ago, they have been a source of puzzlement, as they only occur in some members of a population and are absent from others. When they do occur, they are often harmful, and in the absence of “selfishness”, based on mechanisms of mitotic and meiotic drive, there appears to be no obvious reason for their existence. Cytogeneticists have long wrestled with questions about the biological existence of these enigmatic elements, including their lack of any adaptive properties, apparent absence of functional genes, their origin, sequence organization, and co-evolution as nuclear parasites. Emerging new technologies are now enabling researchers to step up a gear, to look enthusiastically beyond the previous limits of the horizon, and to uncover the secrets of these “silent” chromosomes. This book provides a comprehensive guide to theoretical advancements in the field of B chromosome research in both animal and plant systems.
Author: Hank Bass
Publisher: Springer Science & Business Media
ISBN: 0387708693
Category : Science
Languages : en
Pages : 346
Get Book Here
Book Description
This reference book provides information on plant cytogenetics for students, instructors, and researchers. Topics covered by international experts include classical cytogenetics of plant genomes; plant chromosome structure; functional, molecular cytology; and genome dynamics. In addition, chapters are included on several methods in plant cytogenetics, informatics, and even laboratory exercises for aspiring or practiced instructors. The book provides a unique combination of historical and modern subject matter, revealing the central role of plant cytogenetics in plant genetics and genomics as currently practiced. This breadth of coverage, together with the inclusion of methods and instruction, is intended to convey a deep and useful appreciation for plant cytogenetics. We hope it will inform and inspire students, researchers, and teachers to continue to employ plant cytogenetics to address fundamental questions about the cytology of plant chromosomes and genomes for years to come. Hank W. Bass is a Professor in the Department of Biological Science at Florida State University. James A. Birchler is a Professor in the Division of Biological Sciences at the University of Missouri.
