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Sex And Parthenogenesis
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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.
Book Synopsis Sex and Parthenogenesis by : Koen Martens
Download or read book Sex and Parthenogenesis written by Koen Martens and published by . This book was released on 1998 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lost Sex written by Isa Sch N and published by . This book was released on 2009-09-23 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Biology of Reproduction by : Giuseppe Fusco
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.
Book Synopsis The Evolution of Sex and its Consequences by : S.C. Stearns
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:
Book Synopsis The Evolution of Sex in Plants by : John Merle Coulter
Download or read book The Evolution of Sex in Plants written by John Merle Coulter and published by . This book was released on 1914 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sex and Evolution. (MPB-8), Volume 8 by : George Christopher Williams
Download or read book Sex and Evolution. (MPB-8), Volume 8 written by George Christopher Williams and published by Princeton University Press. This book was released on 2020-03-31 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the relationship between various types of reproduction and the evolutionary process. Starting with the concept of meiosis, George C. Williams states the conditions under which an organism with both sexual and asexual reproductive capacities will employ each mode. He argues that in low-fecundity higher organisms, sexual reproduction is generally maladaptive, and persists because there is no ready means of developing an asexual alternative. The book then considers the evolutionary development of diverse forms of sexuality, such as anisogamy, hermaphroditism. and the evolution of differences between males and females in reproductive strategy. The final two chapters examine the effect of genetic recombination on the evolutionary process itself.
Book Synopsis The Evolution of Sex by : Sir Patrick Geddes
Download or read book The Evolution of Sex written by Sir Patrick Geddes and published by . This book was released on 1889 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Evolution of Sex by : Sir Patrick Geddes
Download or read book The Evolution of Sex written by Sir Patrick Geddes and published by . This book was released on 1890 with total page 354 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.
Book Synopsis Cyclical Parthenogenesis and the Evolution of Sex by : Nina Gerber
Download or read book Cyclical Parthenogenesis and the Evolution of Sex written by Nina Gerber and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Studies on Sex Ratio Evolution. (MPB-22), Volume 22 by : Samuel Karlin
Download or read book Theoretical Studies on Sex Ratio Evolution. (MPB-22), Volume 22 written by Samuel Karlin and published by Princeton University Press. This book was released on 2020-03-31 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with a key area of population genetics: the ratio of the sexes in a population, or the allocation of resources to male versus female reproductive function. Samuel Karlin and Sabin Lessard establish the formal theoretical aspects of the evolution of sex ratio within the constraints of genetic mechanisms of sex determination. Their results generalize and unify existing work on the topic, strengthening previous conceptions in some cases and, in other instances, offering new directions of research. There are two main approaches to understanding the causes and effects of sex ratio. One approach focuses on the optimization and adaptive functions of sex allocation, while the other emphasizes the consequences of genetic sex determination mechanisms. In discussing the utility of these two approaches, Professors Karlin and Lessard examine the principal sex-determining mechanisms and facts involved in sex ratio representations, the various genetic and environmental factors that contribute to adaptive sex expression, and the evolution of sex determining systems and controls. From a population genetic perspective, the authors derive evolutionary properties in support of the high incidence of 1:1 sex ratio in natural populations and investigate the conditions that can explain the occurrence of biased sex ratio.
Download or read book Biology of Sex written by Alex Mills and published by University of Toronto Press. This book was released on 2018-01-01 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explains the biological aspects of human sex by using direct and intriguing comparisons with the many variations in sexual systems among non-human organisms.
Book Synopsis The Masterpiece of Nature by : Graham Bell
Download or read book The Masterpiece of Nature written by Graham Bell and published by Routledge. This book was released on 2019-11-28 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1982, The Masterpiece of Nature examines sex as representative of the most important challenge to the modern theory of evolution. The book suggests that sex evolved, not as the result of normal Darwinian processes of natural selection, but through competition between populations or species - a hypothesis elsewhere almost universally discredited. The book also discusses the nature of sex and its consequences for the individual and for the population, as well as various other theories of sex. Since the value of these theories is held to reside wholly in their ability to predict the patterns of sexuality observed in nature, the book seeks to provide an extensive review of the circumstances in which sexuality is attenuated or lost throughout the animal kingdom, and these facts are then used to weigh up the merits of the rival theories. This book will be of interest to researchers in the area of genetics, ecology and evolutionary biology.
Book Synopsis The Determination of Sex by : Leonard Doncaster
Download or read book The Determination of Sex written by Leonard Doncaster and published by . This book was released on 1914 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Evolution of Sex in Plants by : John Merle Coulter
Download or read book The Evolution of Sex in Plants written by John Merle Coulter and published by . This book was released on 1914 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Masterpiece of Nature by : Graham Bell
Download or read book The Masterpiece of Nature written by Graham Bell and published by Routledge. This book was released on 2019-11-28 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1982, The Masterpiece of Nature examines sex as representative of the most important challenge to the modern theory of evolution. The book suggests that sex evolved, not as the result of normal Darwinian processes of natural selection, but through competition between populations or species - a hypothesis elsewhere almost universally discredited. The book also discusses the nature of sex and its consequences for the individual and for the population, as well as various other theories of sex. Since the value of these theories is held to reside wholly in their ability to predict the patterns of sexuality observed in nature, the book seeks to provide an extensive review of the circumstances in which sexuality is attenuated or lost throughout the animal kingdom, and these facts are then used to weigh up the merits of the rival theories. This book will be of interest to researchers in the area of genetics, ecology and evolutionary biology.
