Download or read book Oenothera Cytogenetics and Evolution written by Ralph Erskine Cleland and published by . This book was released on 1972 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: General behavior of oenothera; Physical basis of the genetical peculiarites of oenothera; Special aspects of aenothera cytogenetics; Evolutionary considerations.
Download or read book Studies in Oenothera Cytogenetics and Phylogeny written by Ralph Erskine Cleland and published by . This book was released on 1950 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taxonomy and Genetics of Oenothera written by Reginald Ruggles Gates and published by Springer. This book was released on 1958-06-30 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the beginning of this century the mutation theory of evolution, based by HUGO DE VRIES on many years of culture experiments mainly with Oenothera Lamarckiana, took the world by storm when published in 1901. As early as 1889 DE VRIES had shown that various plant "monstrosities" are inherited. His breeding experi ments with other plants involved the rediscovery of MENDEL'S laws and the resuscitation of MENDEL'S breeding methods, which had been in abeyance in the long period from 1865 to 1900. MENDEL began his crossing experiments in 1854, DE VRIES began his Oeno thera cultures in 1886. The genus Oenothera was thus the first after Pisum to be the subject of extensive genetic experiments. Thus was introduced the method now so widely pursued. It may be remembered also that DE VRIES drew the distinction between fluctuations and mutations, but he regarded all fluctuations or continuous variations as non-heritable. Both can be equated with the continuous and discontinuous variations of BATESON. DE VRIES' conception of mutations corresponds with the "single variations" of DARWIN, except that he regarded each mutation as producing a new elementary species, now generally called microspe cies. He said in the introduction to his Mutationstheorie, that the characters of organisms are built up from units which are as sharply distinguished from each other as the molecules of chemistry. These units can be united into groups, and in related species of plants and animals the same units and groups are repeated.
Download or read book The Role of Chromosomal Change in Plant Evolution written by Donald A. Levin and published by Oxford University Press. This book was released on 2002-11-28 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of new molecular technology has greatly increased our understanding of the role of chromosomal change in plant evolution. There is now a broad database on genome size variation within and among species and a wide array of nuclear and cytoplasmic genetic markers. There is a variety of literatures addressing this subject but much of it is scattered. This book created a contemporary synthesis or work in this area and addresses issues such as herogeneity, polyploidy, chromosomal rearrangements within species and phenotypic consequences of chromosome doubling.
Download or read book Taxonomy and Genetics of Oenothera written by R. Ruggles Gates and published by Springer. This book was released on 2012-09-07 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the beginning of this century the mutation theory of evolution, based by HUGO DE VRIES on many years of culture experiments mainly with Oenothera Lamarckiana, took the world by storm when published in 1901. As early as 1889 DE VRIES had shown that various plant "monstrosities" are inherited. His breeding experi ments with other plants involved the rediscovery of MENDEL'S laws and the resuscitation of MENDEL'S breeding methods, which had been in abeyance in the long period from 1865 to 1900. MENDEL began his crossing experiments in 1854, DE VRIES began his Oeno thera cultures in 1886. The genus Oenothera was thus the first after Pisum to be the subject of extensive genetic experiments. Thus was introduced the method now so widely pursued. It may be remembered also that DE VRIES drew the distinction between fluctuations and mutations, but he regarded all fluctuations or continuous variations as non-heritable. Both can be equated with the continuous and discontinuous variations of BATESON. DE VRIES' conception of mutations corresponds with the "single variations" of DARWIN, except that he regarded each mutation as producing a new elementary species, now generally called microspe cies. He said in the introduction to his Mutationstheorie, that the characters of organisms are built up from units which are as sharply distinguished from each other as the molecules of chemistry. These units can be united into groups, and in related species of plants and animals the same units and groups are repeated.
Download or read book Taxonomy and Genetics of Oenothera Forty Years Study in the Cytology and Evolution of the Onagraceae 7 written by R R (Reginald Ruggles) 1882 Gates and published by Hassell Street Press. This book was released on 2021-09-10 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Plant Cytogenetics written by David Moresby Moore and published by Chapman & Hall. This book was released on 1976 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The beginnings of cytogenetics; Chromosome structure; Chromosome division and behaviour; Chromosome changes structure , number; Chromosomes and plant evolution; Suggestions for further reading.
Download or read book Studies in Oenothera cytogenetics and phylogeny written by Ralph Erskine Cleland and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Genetic Systems written by Cyril Dean Darlington and published by . This book was released on 1939 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cytogenetics Plant Breeding and Evolution written by Umakant Sinha and published by . This book was released on 1980 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cell organisation; Chemical basis of heredity; Catalytic functions of DNA; Physical organisation of the hereditary material; Cell division; Principles of inheritance; Linkage and crossing over; Gene expression and interaction; Determination of sex; Variation in chromosome number; Variation of chromosome structure; Mutation; Cytoplasmic inheritance and material; The gene since mendel; Genetic regulatory mechanisms; Genetic engineering; Quantitative inheritance; Genes in populations; Hybrid vigour or heterosis; Methods of plan breeding; Crop improvement; Evidences for evolution; Theories of evolution.
Download or read book Oenothera written by Cornelia Harte and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the great variety of problems which this genus presents to biologists, Oenothera belongs to the best-known genera of plants not used economically. This book summarizes today's knowledge of Oenothera's genetics and related fields like caryology and cytogenetics. It is further of great value for all those whose research topics are based on genetics, such as developmental and evolutionary biology.
Download or read book Cytogenetic and Evolutionary Studies of the Tetraploid Clarkia Gracilis and Its Diploid Ancestors written by Mohamed Fathi Ahmed Abdel-Hameed and published by . This book was released on 1967 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cytogenetics written by J. Schulz-Schaeffer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1961 the author has taught a course in Cytogenetics at Montana State University. Undergraduate and graduate stu dents of Biology, Chemistry, Microbiology, Animal and Range Science, Plant and Soil Science, Plant Pathology and Veterinary Science are enrolled. Therefore, the subject matter has been pre sented in an integrated way to correlate it with these diverse disciplines. This book has been prepared as a text for this course. The most recent Cytogenetics text was published in 1972, and rapidly developing research in this field makes a new one urgently needed. This book includes many aspects of Cytogenetics and related fields and is written for the college student as well as for the researcher. It is recommended that the student should have taken preparatory courses in Principles of Genetics and Cytol ogy. The content is more than is usually taught during one quar ter of an academic year, thus allowing an instructor to choose what he or she would like to present to a class. This approach also allows the researcher to obtain a broad exposure to this field of biology. References are generously supplied to stimulate orig inal reading on the subject and to give access to valuable sources. The detailed index is intended to be of special assistance to researchers.
Download or read book Variation and Evolution in Plants and Microorganisms written by National Academy of Sciences and published by National Academies Press. This book was released on 2000-10-11 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The present book is intended as a progress report on [the] synthetic approach to evolution as it applies to the plant kingdom." With this simple statement, G. Ledyard Stebbins formulated the objectives of Variation and Evolution in Plants, published in 1950, setting forth for plants what became known as the "synthetic theory of evolution" or "the modern synthesis." The pervading conceit of the book was the molding of Darwin's evolution by natural selection within the framework of rapidly advancing genetic knowledge. At the time, Variation and Evolution in Plants significantly extended the scope of the science of plants. Plants, with their unique genetic, physiological, and evolutionary features, had all but been left completely out of the synthesis until that point. Fifty years later, the National Academy of Sciences convened a colloquium to update the advances made by Stebbins. This collection of 17 papers marks the 50th anniversary of the publication of Stebbins' classic. Organized into five sections, the book covers: early evolution and the origin of cells, virus and bacterial models, protoctist models, population variation, and trends and patterns in plant evolution.
Download or read book Genetics of Flowering Plants written by Verne Grant and published by Columbia University Press. This book was released on 1975 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gore Vidal, known for such best-sellers as The City and the Pillar, Burr, Lincoln, and Myra Breckinridge, is a household name. The controversial Vidal ran for Congress in 1960, and set sparks flying with his public debates challenging William F. Buckley and Norman Mailer. Although one of America's most admired and prolific writers, Vidal has been steadfastly ignored or impugned by many critics. This is partly owing to the vast scope of his writings, which include more than twenty novels, half a dozen plays, dozens of screenplays, countless essays and book reviews, political commentary, and short stories; how do the critics approach such a writer? There has also been backlash against Vidal, whose radical polemics and undisguised contempt for those whom he has called "the hacks and hicks of academe" have hardly endeared him to the critical establishment. Gore Vidal: Writer Against the Grain is the first collection of critical essays to approach this important American writer in an attempt to rectify the unwarranted underestimation of his work. Jay Parini has drawn from the best of previously published criticism and commissioned fresh articles by leading contemporary critics to construct a comprehensive portrait of Vidal's multifaceted and memorable career. Writers as diverse as Harold Bloom, Stephen Spender, Catharine R. Stimpson, Richard Poirier, and Italo Calvino examine Vidal's work in their own highly individual ways, and each finds a different Vidal to celebrate, chide, recollect, or view close up. Also included is a recent interview with Parini in which Vidal discusses his career and his troubled relationship with the reviewers.The Vidal that finally emerges from these essays is a writer of undeniable weight and importance. As readers will agree, Gore Vidal: Writer Against the Grain establishes his rightful role as one of the premier novelists and leading critical observers of this century.
Download or read book Handbook of Genetics written by Robert C. King and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this and future volumes of the Handbook of Genetics is to bring together a collection of relatively short, authoritative essays or annotated compilations of data on topics of~ignificance to geneticists. Many of the essays will deal with various aspects of the biology of certain species selected because they are favorite subjects for genetic investigation in nature or the laboratory. Often there will be an encyclopedic amount o( information available on such a species, with new papers appearing daily. Most of these will be written for specialists in a jargon that is bewildering to a novice and sometimes even to a veteran geneticist working with evolu tionarily distant organisms. For such readers what is needed is a written introduction to the morphology, life cycle, reproductive behavior, and cul ture methods for the species in question. What are its particular ad vantages (and disadvantages) for genetic study, and what have we learned from it? Where are the classic papers, the key bibliographies, and how or mutant strains? A list giving the sym does one get stocks of wild type bolism for unknown mutations is helpful, but it need include only those mutants that have been retained and are thus available for future studies. Other data, such as up-to-date genetic and cytological maps, listings of break points for chromosomal aberrations, mitotic karyotypes, and hap loid DNA values, will be included when available.
Download or read book Cytogenetics Evolution and Biostatistics written by RS Shukla | PS Chandel and published by S. Chand Publishing. This book was released on 2010 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Degree level Students
