Download or read book Lost Sex written by Isa Schön and published by Springer Science & Business Media. This book was released on 2009-09-22 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sex is the queen of problems in evolutionary biology. Generations of researchers have investigated one of the last remaining evolutionary paradoxes: why sex exists at all. Given that sexual reproduction is costly from an evolutionary point of view, one could wonder why not all animals and plants reproduce asexually. Dozens of contemporary hypotheses attempt to explain the prevalence of sex and its advantages and predict the early extinction of fully asexual lineages. The major theme of this book is: what is the fate of animal and plant groups in which sex is lost? Initial chapters discuss theory behind asexual life: what major disadvantages do asexual groups have to face, what are the genetic and ecological consequences and what does this theory predict for more applied aspects of asexual life, for example in agricultural pests, diseases as well as in cultural crops such as grapes. Cases studies in many animals (focusing on both invertebrates and vertebrates) and plants reveal parallel, but also singularly novel adaptations to the absence of meiosis and syngamy. And last but not least, are asexuals really doomed to early extinction or do genuine ancient asexuals exist? This book assembles contributions from the most important research groups dealing with asexual evolution in eukaryotes. It is a milestone in research on parthenogenesis and will be useful to undergraduate as well as graduate students and to senior researchers in all fields of evolutionary biology, as the paradox of sex remains its queen of problems.
Download or read book Concepts of Biology written by Samantha Fowler and published by . This book was released on 2018-01-07 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concepts of Biology is designed for the single-semester introduction to biology course for non-science majors, which for many students is their only college-level science course. As such, this course represents an important opportunity for students to develop the necessary knowledge, tools, and skills to make informed decisions as they continue with their lives. Rather than being mired down with facts and vocabulary, the typical non-science major student needs information presented in a way that is easy to read and understand. Even more importantly, the content should be meaningful. Students do much better when they understand why biology is relevant to their everyday lives. For these reasons, Concepts of Biology is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand.We also strive to show the interconnectedness of topics within this extremely broad discipline. In order to meet the needs of today's instructors and students, we maintain the overall organization and coverage found in most syllabi for this course. A strength of Concepts of Biology is that instructors can customize the book, adapting it to the approach that works best in their classroom. Concepts of Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand--and apply--key concepts.
Download or read book Artificial Parthenogenesis and Fertilization written by Jacques Loeb and published by . This book was released on 1913 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Sex and its Consequences written by S.C. Stearns and published by Birkhäuser. This book was released on 2013-11-21 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clonality written by John Avise and published by Oxford University Press. This book was released on 2008-10-23 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 99.9% of vertebrate species reproduce sexually. The exceptional 0.1% reproduce via asexual or clonal means, which vary wildly and are fascinating in their own right. In this book, John C. Avise describes the genetics, ecology, natural history, and evolution of the world's approximately 100 species of vertebrate animal that routinely display one form or another of clonal or quasi-clonal reproduction. By considering the many facets of sexual abstinence and clonal reproduction in vertebrate animals, Avise sheds new light on the biological meaning and ramifications of standard sexuality.
Download or read book Parthenogenesis and Polyploidy in Mammalian Development written by and published by CUP Archive. This book was released on 1957 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology of Reproduction written by Giuseppe Fusco and published by Cambridge University Press. This book was released on 2019-10-10 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: A look into the phenomena of sex and reproduction in all organisms, taking an innovative, unified and comprehensive approach.
Download or read book Evolution and Genetics in Life Histories written by H. Dingle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the result of a symposium entitled "Variation in Life Histories: Genetics and Evolutionary Processes" sponsored by the Program in Evolutionary Ecology and Behavior of the University of Iowa and held in Iowa City on October 13 and 14, 1980. Prompted by a recent upsurge of interest in the evolution of life histories, we chose this topic because of the obvious association between life history traits and Darwinian fit ness. If such an association were to be fruitfully investigated, it would require the closer cooperation of population and evolutionary ecologists and quantitative and population geneticists. To encourage such an association, our symposium had four major aims: first, to facilitate intellectual exchange across disciplines among an array of biologists studying life histories; second, to encourage exploration of genetic variance and covari ance for life history traits; third, to consider the ecological background for genetic vari ability; and finally, to facilitate a comparative overview both within and among species. Obviously such broad aims cannot be met totally in a single volume, but we think we have succeeded reasonably well in providing a representative and nourishing intel lectual feast. We see this book as a stimulus to the coordination of future efforts in an important and expanding area of inquiry. We have divided the book into six sections.
Download or read book On a True Parthenogenesis in Moths and Bees written by Carl Theodor Ernst von Siebold and published by . This book was released on 1857 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genes in Conflict written by Austin BURT and published by Harvard University Press. This book was released on 2009-06-30 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering all species from yeast to humans, this is the first book to tell the story of selfish genetic elements that act narrowly to advance their own replication at the expense of the larger organism.
Download or read book Advances in Animal Biotechnology written by Birbal Singh and published by Springer. This book was released on 2019-07-09 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book entitled, “Advances in Animal Biotechnology,” is a compilation of state-of-the-art in the field of Animal Biotechnology including fishery, that are not sheltered in depth in earlier publications. It offers an update on avant-garde technologies and advances in key aspects of genetic engineering, metagenomics, assisted reproduction, animal genomics, biotechnology in veterinary health, as well as the role of gut and marine microbial ecosystems in livestock and industrial development. The book is divided broadly into five different sections, viz., Gut Microbiome and Nutritional Biotechnology, Assisted Reproduction Biotechnology, Livestock Genomics, Health Biotechnology, and Animal Biotechnology in Global Perspective. The book covers the syllabi of Animal Biotechnology courses in various universities, academia and competitive examinations at various levels. Researchers, Continuing Graduates, and Academicians, Research Institutions, and Biotech Companies will be benefited from this valuable compilation of research. Its broad spectrum makes this work a valuable resource for professionals, researchers, academics and students in the field of veterinary and animal production as well as the biotechnology industry.
Download or read book Evolution and Speciation in Animals written by T. J. Pandian and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial distribution -- Coevolution and diversity -- Food and feeding modes -- Gonochorism and males -- Hermaphroditism and selfing -- Parthenogenesis and unisexualism -- Clonals and stem cells -- Mitosis and meiosis -- Oogenesis and vitellogenesis -- Spermatogenesis and spermatophores -- Female- vs male-heterogamety -- Eutelism and parasitism -- Monogamy vs. Polygamy -- Semelparity vs iteroparity -- Spawning and oviposition -- Fertilization success -- Fecundity -- Direct and indirect life cycle -- Brooding and viviparity -- Feeding and non-feeding larvae -- Parasites and hosts -- Sex determination and differentiation -- Metamorphosis and recruitment -- Message from fossils -- Conservation -- Climate change.
Download or read book Virgin Birth written by Jeff Ambrose Mitchell and published by . This book was released on 2020-05-14 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most fascinating, and yet, least discussed major topic in biology. First observed over 300 years ago in moths, it is now a fully accepted natural phenomenon by the science establishment having been proven to occur in every class of the sexual Animal Kingdom except mammals. Now for the first time, a straightforward look at the history of research in to parthenogenesis: the various conclusions on how and why it occurs, including some conclusions that were rather humorous, and others that tried to simply explain it away; the final examination of what we know about it today; and the only rational, yet shocking explanation for what it means. Written by Jeff Ambrose Mitchell, the author of Nature: The Embedded Recording, the book that Kirkus Reviews called "bold and persuasive."
Download or read book On Parthenogenesis written by Richard Owen and published by . This book was released on 1849 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertilization in Protozoa and Metazoan Animals written by Juan J. Tarin and published by Springer Science & Business Media. This book was released on 2000-09-14 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproduction is the origination of new organisms from pre-existing ones. Among more than 35 separated forms of reproduction including several types of gamogony, parthenogenesis, agamogenesis, fission and division, and plas motomy, the bisexual mode of reproduction via fertilization provides genetic variability that allows species to adapt quickly to competitive and constantly changing environments. Several excellent reviews and books have been written in the past to analyse the mechanisms of fertilization in different eukaryotic species. During the last few years, however, renewed attention has been paid to examining the process of oocyte fertilization at the cellular/molecular level not only within a single species/group but also through different phylogenetic lineages. As a result of this effort, knowledge of the molecular pathways used by oocytes and spermatozoa at fertilization has increased, but still many ques tions remain to be answered. Being aware of the necessity of providing an inte grated view of the process of fertilization, this book has been entirely devoted to reviewing the process of oocyte fertilization at the cellular/molecular level in two different and separated groups of eukaryotic organisms: protozoa and metazoan animals. The book is organized into six sections dealing with oocyte fertilization in protozoa, invertebrates, teleost fishes, amphibians, birds and mammals. These sections are followed by a summary/concluding chapter that provides a com parative overview of the process of fertilization in these groups of eukaryotes.
Download or read book Essays in Evolution and Genetics in Honor of Theodosius Dobzhansky written by Max K. Hecht and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is not often that one has the opportunity to send a public birthday greet ing to a friend and colleague of many years, and to congratulate him on having reached the age of reason. In fact it happens only once, and comes then as a surprise. Surely it was only a few years ago that we sat together at an International Genetics Congress in Ithaca, and only yesterday that we became members of the same department. The eighth floor of Schermerhorn Hall had a north end where the flies were and a south end furnished with mice, and in between, a seminar room and laboratory. There the distances were short and the doors open and the coffee pot busy. But it now appears that yesterday has fallen thirty years behind and that we have grown up. I find it interesting and appropriate that Dobzhansky's lifetime spans the period of maturation of the fields to which this volume is devoted. This is true in a chronological sense for his birth occurred in the same year, 1900, in which modern genetics began. The rediscovery of Mendel's princi ples and the interpretation of the nature of heredity and variation to which this event led were necessary prerequisites to the development of evolution ary biology as presented in this collection of essays.
Download or read book On a True Parthenogenesis in Moths and Bees written by Carl Th. Ernst Siebold and published by . This book was released on 1857 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
