Chromosomal Evolution in Higher Plants
Author : George Ledyard Stebbins
Publisher :
Page : 0 pages
File Size : 17,36 MB
Release : 1971
Category : Chromosomes
ISBN : 9780713122886
Author : George Ledyard Stebbins
Publisher :
Page : 0 pages
File Size : 17,36 MB
Release : 1971
Category : Chromosomes
ISBN : 9780713122886
Author : Donald A. Levin
Publisher : Oxford University Press, USA
Page : 244 pages
File Size : 50,21 MB
Release : 2002
Category : Science
ISBN : 9780195138603
Genome, heterozygosity, polyploidy, phenotype, genes, euploid, aneuploid.
Author : Theodosius Dobzhansky
Publisher : W H Freeman & Company
Page : 572 pages
File Size : 10,93 MB
Release : 1977
Category : Évolution
ISBN : 9780716705727
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
Page : 216 pages
File Size : 43,54 MB
Release : 1971
Category : Chromosomes
ISBN : 9780713122886
Author : Martin A. Lysak
Publisher : Frontiers Media SA
Page : 221 pages
File Size : 27,13 MB
Release : 2021-09-28
Category : Science
ISBN : 2889714004
Author : Walter H. Lewis
Publisher : Springer Science & Business Media
Page : 576 pages
File Size : 37,21 MB
Release : 2012-12-06
Category : Medical
ISBN : 1461330696
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 : Pamela Soltis
Publisher : Springer Science & Business Media
Page : 416 pages
File Size : 32,89 MB
Release : 2012-10-03
Category : Science
ISBN : 3642314414
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 : Jean-Nicolas Volff
Publisher : Karger Medical and Scientific Publishers
Page : 155 pages
File Size : 23,15 MB
Release : 2008-01-01
Category : Medical
ISBN : 3805584911
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 :
Publisher :
Page : 0 pages
File Size : 50,80 MB
Release : 2002
Category : Cells
ISBN : 9780815332183
Author : National Research Council
Publisher : National Academies Press
Page : 254 pages
File Size : 42,50 MB
Release : 2004-07-08
Category : Science
ISBN : 0309166152
Assists policymakers in evaluating the appropriate scientific methods for detecting unintended changes in food and assessing the potential for adverse health effects from genetically modified products. In this book, the committee recommended that greater scrutiny should be given to foods containing new compounds or unusual amounts of naturally occurring substances, regardless of the method used to create them. The book offers a framework to guide federal agencies in selecting the route of safety assessment. It identifies and recommends several pre- and post-market approaches to guide the assessment of unintended compositional changes that could result from genetically modified foods and research avenues to fill the knowledge gaps.