Natural Selection And Genetic Drift
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Natural Selection And Genetic Drift
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Author : Joshua Richardson
language : en
Publisher: Nova Science Publishers
Release Date : 2016
Natural Selection And Genetic Drift written by Joshua Richardson and has been published by Nova Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Science categories.
Natural selection is the process which, being the most important factor of evolution, promotes rising of adaptability and prevents destructive consequences of all other processes. The concept of natural selection is a discordant problem of evolutionary human genetics. Despite popularity of a hypothesis of "neutral evolution", the majority of scientists consider that selection has played main role in evolution of species and has generated all bio-logical diversity of human populations. This book presents research on natural selection and genetic drift. The author of the first chapter provides an all-embracing macroevolutionary perspective on the processes of the evolution of life and culture on earth. The author investigates a complementary form of natural selection that diverges from the traditional form in that it is acting independently of the external environment. The next chapter discusses natural selection and diabetes mellitus. The last chapter examines how the genetic drift among native people from South American the Gran Chaco region affects interleukin 1 receptor antagonist variation.
Mechanisms Of Evolution
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Author : Christopher J. Paradise
language : en
Publisher:
Release Date : 2016-04-27
Mechanisms Of Evolution written by Christopher J. Paradise and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-27 with Science categories.
Three of the four major mechanisms of evolution, natural selection, genetic drift, and gene flow are examined. There are 5 tenets of natural selection that influence individual organisms: Individuals within populations are variable, that variation is heritable, organisms differ in their ability to survive and reproduce, more individuals are produced in a generation than can survive, and survival & reproduction of those variable individuals are non-random. Organisms respond evolutionarily to changes in their environment and other selection pressures, including global climate change. The importance of spatial structure of a population in relation to how it affects the strength of gene flow and/or genetic drift, as well as the genetic variation and evolution of populations, is shown. Gene flow tends to reduce variation between populations and increase it within populations, whereas genetic drift tends to reduce genetic variation, especially in small, isolated populations. The mechanisms of evolution can lead to speciation, which requires both time and genetic isolation of populations, in addition to natural selection or genetic drift.
Natural Selection And Genetic Drift Effects On Neutral Polymorphism
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Author : Sandrine Adiba
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2011-12
Natural Selection And Genetic Drift Effects On Neutral Polymorphism written by Sandrine Adiba and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-12 with categories.
The diversity of living organisms is essential for their capacity to evolve and adapt to environmental changes. Therefore, determining the factors responsible for the origin and maintenance of diversity remain central and fundamental research objective. The aim of this book was to understand the evolutionary factors maintaining neutral polymorphism. Using a biological model consisting of the bacterium Escherichia coli and the social amoeba Dictyostelium discoideum enable us to study the natural variability of interactions between the two species. In the second part of this work, we studied the bacterial traits involved in this natural variability. In coevolution experiments, we followed temporal allele frequency variations over 300 bacterial generations under four sets of environmental conditions: with or without biotic factor and with or without spatial structure. The aim of theoretical model we developed was to address the demographic stochasticity effects on neutral allele fixation probability and time to fixation. This book should be useful to professionals in experimentation or theoretical models or anyone else who may be concerning about evolution and population genetics.
Evolutionary Genetics
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Author : Glenn-Peter Sætre
language : en
Publisher: Oxford University Press
Release Date : 2019-05-13
Evolutionary Genetics written by Glenn-Peter Sætre and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-13 with Science categories.
With recent technological advances, vast quantities of genetic and genomic data are being generated at an ever-increasing pace. The explosion in access to data has transformed the field of evolutionary genetics. A thorough understanding of evolutionary principles is essential for making sense of this, but new skill sets are also needed to handle and analyze big data. This contemporary textbook covers all the major components of modern evolutionary genetics, carefully explaining fundamental processes such as mutation, natural selection, genetic drift, and speciation. It also draws on a rich literature of exciting and inspiring examples to demonstrate the diversity of evolutionary research, including an emphasis on how evolution and selection has shaped our own species. Practical experience is essential for developing an understanding of how to use genetic and genomic data to analyze and interpret results in meaningful ways. In addition to the main text, a series of online tutorials using the R language serves as an introduction to programming, statistics, and analysis. Indeed the R environment stands out as an ideal all-purpose source platform to handle and analyze such data. The book and its online materials take full advantage of the authors' own experience in working in a post-genomic revolution world, and introduces readers to the plethora of molecular and analytical methods that have only recently become available. Evolutionary Genetics is an advanced but accessible textbook aimed principally at students of various levels (from undergraduate to postgraduate) but also for researchers looking for an updated introduction to modern evolutionary biology and genetics.
Population Genetics
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Author : John H. Gillespie
language : en
Publisher: JHU Press
Release Date : 2004-08-06
Population Genetics written by John H. Gillespie and has been published by JHU Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-08-06 with Science categories.
This concise introduction offers students and researchers an overview of the discipline that connects genetics and evolution. Addressing the theories behind population genetics and relevant empirical evidence, John Gillespie discusses genetic drift, natural selection, nonrandom mating, quantitative genetics, and the evolutionary advantage of sex. First published to wide acclaim in 1998, this brilliant primer has been updated to include new sections on molecular evolution, genetic drift, genetic load, the stationary distribution, and two-locus dynamics. This book is indispensable for students working in a laboratory setting or studying free-ranging populations.
An Experimental Study Of Interaction Between Genetic Drift And Natural Selection
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Author : Theodosius Grigorievich Dobzhansky
language : en
Publisher:
Release Date : 1962
An Experimental Study Of Interaction Between Genetic Drift And Natural Selection written by Theodosius Grigorievich Dobzhansky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Genetics categories.
Darwing And The Theory Of Evolution
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Author : IntroBooks
language : en
Publisher: IntroBooks
Release Date : 2018-02-19
Darwing And The Theory Of Evolution written by IntroBooks and has been published by IntroBooks this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-19 with Science categories.
A steady course in which something changes into a diverse and unambiguously a more composite form can be described as evolution. Evolution is the method by which an organism converts to a more erudite form over time and in retort to its milieu. The Theory of Evolution is presently the most widely held conception of how life touched its present state. Evolution as a biotic mechanism is driven by natural selection. This theory is favoured by many researchers to elucidate occurrences in nature, so much so that it is usually presumed as actual in most lessons. Evolution is not without dispute, besides religious oppositions, study of evolution in detail advances suspicions which science is bound to answer. Radically, evolution has never been verified and scientists too don’t deny this fact. Paradoxically many evolutionists shield the theory using the arguments once accredited to fundamentalist Christians like, “because I choose to believe”. These scientists bung up in the fissures in the evolutionary model using rational suppositions, something for which non-evolutionists are often carped.
Natural Selection In The Wild Mpb 21 Volume 21
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Author : John A. Endler
language : en
Publisher: Princeton University Press
Release Date : 2020-03-31
Natural Selection In The Wild Mpb 21 Volume 21 written by John A. Endler and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-31 with Science categories.
Natural selection is an immense and important subject, yet there have been few attempts to summarize its effects on natural populations, and fewer still which discuss the problems of working with natural selection in the wild. These are the purposes of John Endler's book. In it, he discusses the methods and problems involved in the demonstration and measurement of natural selection, presents the critical evidence for its existence, and places it in an evolutionary perspective. Professor Endler finds that there are a remarkable number of direct demonstrations of selection in a wide variety of animals and plants. The distribution of observed magnitudes of selection in natural populations is surprisingly broad, and it overlaps extensively the range of values found in artificial selection. He argues that the common assumption that selection is usually weak in natural populations is no longer tenable, but that natural selection is only one component of the process of evolution; natural selection can explain the change of frequencies of variants, but not their origins.
The Causal Structure Of Natural Selection
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Author : Charles H. Pence
language : en
Publisher: Cambridge University Press
Release Date : 2021-11-04
The Causal Structure Of Natural Selection written by Charles H. Pence and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-04 with Science categories.
Recent arguments concerning the nature of causation in evolutionary theory, now often known as the debate between the 'causalist' and 'statisticalist' positions, have involved answers to a variety of independent questions - definitions of key evolutionary concepts like natural selection, fitness, and genetic drift; causation in multi-level systems; or the nature of evolutionary explanations, among others. This Element offers a way to disentangle one set of these questions surrounding the causal structure of natural selection. Doing so allows us to clearly reconstruct the approach that some of these major competing interpretations of evolutionary theory have to this causal structure, highlighting particular features of philosophical interest within each. Further, those features concern problems not exclusive to the philosophy of biology. Connections between them and, in two case studies, contemporary metaphysics and philosophy of physics demonstrate the potential value of broader collaboration in the understanding of evolution.
Natural Selection In Human Populations
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Author : Carl Jay Bajema
language : en
Publisher: Krieger Publishing Company
Release Date : 1977
Natural Selection In Human Populations written by Carl Jay Bajema and has been published by Krieger Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Evolución humana categories.