Download or read book Divergence with Genetic Exchange written by Michael Lynn Arnold and published by Oxford University Press. This book was released on 2016 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an investigation into processes associated with evolutionary divergence and diversification, focussing on the role played by the exchange of genes between divergent lineages.
Download or read book Bayesian Phylogenetics written by Ming-Hui Chen and published by CRC Press. This book was released on 2014-05-27 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering a rich diversity of models, Bayesian phylogenetics allows evolutionary biologists, systematists, ecologists, and epidemiologists to obtain answers to very detailed phylogenetic questions. Suitable for graduate-level researchers in statistics and biology, Bayesian Phylogenetics: Methods, Algorithms, and Applications presents a snapshot of current trends in Bayesian phylogenetic research. Encouraging interdisciplinary research, this book introduces state-of-the-art phylogenetics to the Bayesian statistical community and, likewise, presents state-of-the-art Bayesian statistics to the phylogenetics community. The book emphasizes model selection, reflecting recent interest in accurately estimating marginal likelihoods. It also discusses new approaches to improve mixing in Bayesian phylogenetic analyses in which the tree topology varies. In addition, the book covers divergence time estimation, biologically realistic models, and the burgeoning interface between phylogenetics and population genetics.
Download or read book The Timetree of Life written by S. Blair Hedges and published by OUP Oxford. This book was released on 2009-04-23 with total page 1237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolutionary history of life includes two primary components: phylogeny and timescale. Phylogeny refers to the branching order (relationships) of species or other taxa within a group and is crucial for understanding the inheritance of traits and for erecting classifications. However, a timescale is equally important because it provides a way to compare phylogeny directly with the evolution of other organisms and with planetary history such as geology, climate, extraterrestrialimpacts, and other features.The Timetree of Life is the first reference book to synthesize the wealth of information relating to the temporal component of phylogenetic trees. In the past, biologists have relied exclusively upon the fossil record to infer an evolutionary timescale. However, recent revolutionary advances in molecular biology have made it possible to not only estimate the relationships of many groups of organisms, but also to estimate their times of divergence with molecular clocks. The routineestimation and utilization of these so-called 'time-trees' could add exciting new dimensions to biology including enhanced opportunities to integrate large molecular data sets with fossil and biogeographic evidence (and thereby foster greater communication between molecular and traditional systematists). Theycould help estimate not only ancestral character states but also evolutionary rates in numerous categories of organismal phenotype; establish more reliable associations between causal historical processes and biological outcomes; develop a universally standardized scheme for biological classifications; and generally promote novel avenues of thought in many arenas of comparative evolutionary biology.This authoritative reference work brings together, for the first time, experts on all major groups of organisms to assemble a timetree of life. The result is a comprehensive resource on evolutionary history which will be an indispensable reference for scientists, educators, and students in the life sciences, earth sciences, and molecular biology. For each major group of organism, a representative is illustrated and a timetree of families and higher taxonomic groups is shown. Basic aspects ofthe evolutionary history of the group, the fossil record, and competing hypotheses of relationships are discussed. Details of the divergence times are presented for each node in the timetree, and primary literature references are included. The book is complemented by an online database(www.timetree.net) which allows researchers to both deposit and retrieve data.
Download or read book Evolving Genes and Proteins written by Vernon Bryson and published by . This book was released on 1965 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Details new perspectives of structural and functional features of proteins and nucleic acids in biochemistry.
Download or read book The Evolutionary Biology of Species written by Timothy G. Barraclough and published by . This book was released on 2019 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Species' are central to understanding the origin and dynamics of biological diversity; explaining why lineages split into multiple distinct species is one of the main goals of evolutionary biology. However the existence of species is often taken for granted, and precisely what is meant by species and whether they really exist as a pattern of nature has rarely been modelled or critically tested. This novel book presents a synthetic overview of the evolutionary biology of species, describing what species are, how they form, the consequences of species boundaries and diversity for evolution, and patterns of species accumulation over time. The central thesis is that species represent more than just a unit of taxonomy; they are a model of how diversity is structured as well as how groups of related organisms evolve. The author adopts an intentionally broad approach, stepping back from the details to consider what species constitute, both theoretically and empirically, and how we detect them, drawing on a wealth of examples from microbes to multicellular organisms.
Download or read book In the Light of Evolution written by National Academy of Sciences and published by . This book was released on 2007 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arthur M. Sackler Colloquia of the National Academy of Sciences address scientific topics of broad and current interest, cutting across the boundaries of traditional disciplines. Each year, four or five such colloquia are scheduled, typically two days in length and international in scope. Colloquia are organized by a member of the Academy, often with the assistance of an organizing committee, and feature presentations by leading scientists in the field and discussions with a hundred or more researchers with an interest in the topic. Colloquia presentations are recorded and posted on the National Academy of Sciences Sackler colloquia website and published on CD-ROM. These Colloquia are made possible by a generous gift from Mrs. Jill Sackler, in memory of her husband, Arthur M. Sackler.
Download or read book Concepts of Biology written by Samantha Fowler and published by . This book was released on 2023-05-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black & white print. Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.
Download or read book Evolution and Selection of Quantitative Traits written by Bruce Walsh and published by Oxford University Press. This book was released on 2018-06-21 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative traits-be they morphological or physiological characters, aspects of behavior, or genome-level features such as the amount of RNA or protein expression for a specific gene-usually show considerable variation within and among populations. Quantitative genetics, also referred to as the genetics of complex traits, is the study of such characters and is based on mathematical models of evolution in which many genes influence the trait and in which non-genetic factors may also be important. Evolution and Selection of Quantitative Traits presents a holistic treatment of the subject, showing the interplay between theory and data with extensive discussions on statistical issues relating to the estimation of the biologically relevant parameters for these models. Quantitative genetics is viewed as the bridge between complex mathematical models of trait evolution and real-world data, and the authors have clearly framed their treatment as such. This is the second volume in a planned trilogy that summarizes the modern field of quantitative genetics, informed by empirical observations from wide-ranging fields (agriculture, evolution, ecology, and human biology) as well as population genetics, statistical theory, mathematical modeling, genetics, and genomics. Whilst volume 1 (1998) dealt with the genetics of such traits, the main focus of volume 2 is on their evolution, with a special emphasis on detecting selection (ranging from the use of genomic and historical data through to ecological field data) and examining its consequences.
Download or read book Biology for AP Courses written by Julianne Zedalis and published by . This book was released on 2017-10-16 with total page 1923 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology for AP® courses covers the scope and sequence requirements of a typical two-semester Advanced Placement® biology course. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology for AP® Courses was designed to meet and exceed the requirements of the College Board’s AP® Biology framework while allowing significant flexibility for instructors. Each section of the book includes an introduction based on the AP® curriculum and includes rich features that engage students in scientific practice and AP® test preparation; it also highlights careers and research opportunities in biological sciences.
Download or read book Geographic Variation Speciation and Clines MPB 10 Volume 10 written by John A. Endler and published by Princeton University Press. This book was released on 2020-03-31 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geographic Variation, Speciation and Clines explores the origins and development of geographic variation, divergence, and speciation. In particular it is concerned with genetic divergence as it is usually found on continents, among groups of populations isolated only by distance. Although earlier writers on this topic considered the effects of geography and dispersal, intense geographic differentiation and speciation were thought to require complete isolation. Professor Endler shows how geographic differentiation and speciation may develop in spite of continuous gene flow. Following a review of the diverse and scattered literature on gene flow and population differentiation, the author discusses the relationships among gene flow, dispersal, and migration. He then summarizes the factors which limit the geographic extent of gene flow, and those which allow steep clines to develop in the absence of barriers to gene flow. His analysis draws on examples from the field, experiments, and single- and multiple-locus models. The mechanism and conditions for parapatric speciation are presented: steepening clines, development into hybrid zones, and the evolution of sexual isolation. In the final chapter the author considers the interpretation of natural clines and the associated geographic patterns of subspecies and species.
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Divergent Paths written by Annette Bernhardt and published by Russell Sage Foundation. This book was released on 2001-06-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The promise of upward mobility—the notion that everyone has the chance to get ahead—is one of this country's most cherished ideals, a hallmark of the American Dream. But in today's volatile labor market, the tradition of upward mobility for all may be a thing of the past. In a competitive world of deregulated markets and demanding shareholders, many firms that once offered the opportunity for advancement to workers have remade themselves as leaner enterprises with more flexible work forces. Divergent Paths examines the prospects for upward mobility of workers in this changed economic landscape. Based on an innovative comparison of the fortunes of two generations of young, white men over the course of their careers, Divergent Paths documents the divide between the upwardly mobile and the growing numbers of workers caught in the low-wage trap. The first generation entered the labor market in the late 1960s, a time of prosperity and stability in the U.S. labor market, while the second generation started work in the early 1980s, just as the new labor market was being born amid recession, deregulation, and the weakening of organized labor. Tracking both sets of workers over time, the authors show that the new labor market is more volatile and less forgiving than the labor market of the 1960s and 1970s. Jobs are less stable, and the penalties for failing to find a steady employer are more severe for most workers. At the top of the job pyramid, the new nomads—highly credentialed, well-connected workers—regard each short-term project as a springboard to a better-paying position, while at the bottom, a growing number of retail workers, data entry clerks, and telemarketers, are consigned to a succession of low-paying, dead-end jobs. While many commentators dismiss public anxieties about job insecurity as overblown, Divergent Paths carefully documents hidden trends in today's job market which confirm many of the public's fears. Despite the celebrated job market of recent years, the authors show that the old labor market of the 1960s and 1970s propelled more workers up the earnings ladder than does today's labor market. Divergent Paths concludes with a discussion of policy strategies, such as regional partnerships linking corporate, union, government, and community resources, which may help repair the career paths that once made upward mobility a realistic ambition for all American workers.
Download or read book Drosophila Inversion Polymorphism written by Costas B. Krimbas and published by CRC Press. This book was released on 1992-08-21 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inversion polymorphism in Drosophila has long served as a research subject for a variety of evolutionary studies and continues to be extremely important in understanding evolutionary principles today. Until now, no single volume has ever been assembled as a summary of this work. Drosophila Inversion Polymorphism provides background information, explores new and rigorous approaches to reconstructing phylogenetic relationships from inversion variation, and discusses inversion polymorphism in the six most studied species groups. Some chapters examine general principles and conclusions, some present detailed data sets (many of which have never before been published), and others offer detailed chromosome maps for identification. The book is a one-of-a-kind source of summary discussions and data ripe for analysis. Geneticists, evolutionary biologists, biologists, and all investigators researching inversion polymorphisms should consider Drosophila Inversion Polymorphism a "must-have" volume.
Download or read book How and Why Species Multiply written by Peter R. Grant and published by Princeton University Press. This book was released on 2011-05-29 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trace the evolutionary history of fourteen different species of finches on the Galapagos Islands that were studied by Charles Darwin.
Download or read book Floral Biology written by David G. Lloyd and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies in floral biology are largely concerned with how flowers function to promote pollination and mating. The role of pollination in governing mating patterns in plant populations inextricably links the evolution of pollination and mating systems. Despite the close functional link between pollination and mating, research conducted for most of this century on these two fundamental aspects of plant reproduction has taken quite separate courses. This has resulted in suprisingly little cross-fertilization between the fields of pollination biology on the one hand and plant mating-system studies on the other. The separation of the two areas has largely resulted from the different backgrounds and approaches adopted by workers in these fields. Most pollination studies have been ecological in nature with a strong emphasis on field research and until recently few workers considered how the mechanics of pollen dispersal might influence mating patterns and individual plant fitness. In contrast, work on plant mating patterns has often been conducted in an ecological vacuum largely devoid of information on the environmental and demographic context in which mating occurs. Mating-system research has been dominated by population genetic and theoretical perspectives with surprisingly little consideration given to the proximate ecological factors responsible for causing a particular pattern of mating to occur.
Download or read book The Expressiveness of the Body and the Divergence of Greek and Chinese Medicine written by Shigehisa Kuriyama and published by Princeton University Press. This book was released on 2023-10-17 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: An illuminating account of how early medicine in Greece and China perceived the human body Winner of the William H. Welch Medal, American Association for the History of Medicine The true structure and workings of the human body are, we casually assume, everywhere the same, a universal reality. But when we look into the past, our sense of reality wavers: accounts of the body in diverse medical traditions often seem to describe mutually alien, almost unrelated worlds. How can perceptions of something as basic and intimate as the body differ so? In this book, Shigehisa Kuriyama explores this fundamental question, elucidating the fascinating contrasts between the human body described in classical Greek medicine and the body as envisaged by physicians in ancient China. Revealing how perceptions of the body and conceptions of personhood are intimately linked, his comparative inquiry invites us, indeed compels us, to reassess our own habits of feeling and perceiving.
Download or read book The Long Divergence written by Timur Kuran and published by Princeton University Press. This book was released on 2012-11-11 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: How religious barriers stalled capitalism in the Middle East In the year 1000, the economy of the Middle East was at least as advanced as that of Europe. But by 1800, the region had fallen dramatically behind—in living standards, technology, and economic institutions. In short, the Middle East had failed to modernize economically as the West surged ahead. What caused this long divergence? And why does the Middle East remain drastically underdeveloped compared to the West? In The Long Divergence, one of the world's leading experts on Islamic economic institutions and the economy of the Middle East provides a new answer to these long-debated questions. Timur Kuran argues that what slowed the economic development of the Middle East was not colonialism or geography, still less Muslim attitudes or some incompatibility between Islam and capitalism. Rather, starting around the tenth century, Islamic legal institutions, which had benefitted the Middle Eastern economy in the early centuries of Islam, began to act as a drag on development by slowing or blocking the emergence of central features of modern economic life—including private capital accumulation, corporations, large-scale production, and impersonal exchange. By the nineteenth century, modern economic institutions began to be transplanted to the Middle East, but its economy has not caught up. And there is no quick fix today. Low trust, rampant corruption, and weak civil societies—all characteristic of the region's economies today and all legacies of its economic history—will take generations to overcome. The Long Divergence opens up a frank and honest debate on a crucial issue that even some of the most ardent secularists in the Muslim world have hesitated to discuss.
