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Author: Benedikt Hallgrímsson Publisher: Elsevier ISBN: 0080454461 Category : Science Languages : en Pages : 594
Book Description
Darwin's theory of evolution by natural selection was based on the observation that there is variation between individuals within the same species. This fundamental observation is a central concept in evolutionary biology. However, variation is only rarely treated directly. It has remained peripheral to the study of mechanisms of evolutionary change. The explosion of knowledge in genetics, developmental biology, and the ongoing synthesis of evolutionary and developmental biology has made it possible for us to study the factors that limit, enhance, or structure variation at the level of an animals' physical appearance and behavior. Knowledge of the significance of variability is crucial to this emerging synthesis. Variation situates the role of variability within this broad framework, bringing variation back to the center of the evolutionary stage. - Provides an overview of current thinking on variation in evolutionary biology, functional morphology, and evolutionary developmental biology - Written by a team of leading scholars specializing on the study of variation - Reviews of statistical analysis of variation by leading authorities - Key chapters focus on the role of the study of phenotypic variation for evolutionary, developmental, and post-genomic biology
Author: Benedikt Hallgrímsson Publisher: Elsevier ISBN: 0080454461 Category : Science Languages : en Pages : 594
Book Description
Darwin's theory of evolution by natural selection was based on the observation that there is variation between individuals within the same species. This fundamental observation is a central concept in evolutionary biology. However, variation is only rarely treated directly. It has remained peripheral to the study of mechanisms of evolutionary change. The explosion of knowledge in genetics, developmental biology, and the ongoing synthesis of evolutionary and developmental biology has made it possible for us to study the factors that limit, enhance, or structure variation at the level of an animals' physical appearance and behavior. Knowledge of the significance of variability is crucial to this emerging synthesis. Variation situates the role of variability within this broad framework, bringing variation back to the center of the evolutionary stage. - Provides an overview of current thinking on variation in evolutionary biology, functional morphology, and evolutionary developmental biology - Written by a team of leading scholars specializing on the study of variation - Reviews of statistical analysis of variation by leading authorities - Key chapters focus on the role of the study of phenotypic variation for evolutionary, developmental, and post-genomic biology
Author: Pilar Barbosa Publisher: John Benjamins Publishing Company ISBN: 9027265143 Category : Language Arts & Disciplines Languages : en Pages : 353
Book Description
Studies on Variation in Portuguese offers a collection of studies on a range of variable phenomena attested within and across varieties of Portuguese. The volume starts out with an overview of current issues in the study of intralinguistic variation and is divided in two parts. Part 1 is dedicated to research on variation within national varieties (Brazilian and European). Here, a multidimensional analysis that combines both the geographic and the social dimensions of variation emerges as a way to identify possible regional specificities and the directionality of some of the variants. Part 2 collects studies that compare the behavior of a particular linguistic variable across different varieties. The variable phenomena discussed concern several levels of grammar and are framed within different conceptions of variation, thus promoting confrontation of theoretical and methodological alternatives. Overall, the volume constitutes a significant contribution to the essential question of how to model variation at different levels.
Author: Benedikt Szmrecsanyi Publisher: Cambridge University Press ISBN: 1108491561 Category : Language Arts & Disciplines Languages : en Pages : 237
Book Description
Variation studies is an increasingly popular area in linguistics, becoming embedded in curriculum design, conferences, and research. However, the field is at risk of fragmenting into different research communities with different foci. This pioneering book addresses this by establishing a canon of state-of-the-art quantitative methods to analyze grammatical variation from a comparative perspective. It explains how to use these methods to investigate large datasets in a responsible fashion, providing a blueprint for applying techniques from corpus linguistic, variationist, and dialectometric traditions in novel ways. It specifically explores the scope and limits of syntactic variability in a global language such as English, and investigates three grammatical alternations in nine varieties of English, exploring what we can learn about the grammatical choices that people make based on both observational and experimental data. Comprehensive yet accessible, it will be of interest to academic researchers and students of sociolinguistic, corpus linguistics, and World Englishes.
Author: Theresa Biberauer Publisher: Cambridge University Press ISBN: 0521886953 Category : Language Arts & Disciplines Languages : en Pages : 375
Book Description
Parametric variation in linguistic theory refers to the systematic grammatical variation permitted by the human language faculty. This book is a defence of the parametric approach to linguistic variation, set within the framework of the Minimalist Program.
Author: Freddy Bugge Christiansen Publisher: Princeton University Press ISBN: 0691165890 Category : Science Languages : en Pages : 431
Book Description
This textbook provides an authoritative introduction to both classical and coalescent approaches to population genetics. Written for graduate students and advanced undergraduates by one of the world's leading authorities in the field, the book focuses on the theoretical background of population genetics, while emphasizing the close interplay between theory and empiricism. Traditional topics such as genetic and phenotypic variation, mutation, migration, and linkage are covered and advanced by contemporary coalescent theory, which describes the genealogy of genes in a population, ultimately connecting them to a single common ancestor. Effects of selection, particularly genomic effects, are discussed with reference to molecular genetic variation. The book is designed for students of population genetics, bioinformatics, evolutionary biology, molecular evolution, and theoretical biology--as well as biologists, molecular biologists, breeders, biomathematicians, and biostatisticians. Contains up-to-date treatment of key areas in classical and modern theoretical population genetics Provides in-depth coverage of coalescent theory Discusses genomic effects of selection Gives examples from empirical population genetics Incorporates figures, diagrams, and boxed features throughout Includes end-of-chapter exercises Speaks to a wide range of students in biology, bioinformatics, and biostatistics
Author: Maurits Van den Noort Publisher: MDPI ISBN: 3039281046 Category : Social Science Languages : en Pages : 264
Book Description
The number of bilingual and multilingual speakers around the world is steadily growing, leading to the questions: How do bilinguals manage two or more language systems in their daily interactions, and how does being bilingual/multilingual affect brain functioning and vice versa? Previous research has shown that cognitive control plays a key role in bilingual language management. This hypothesis is further supported by the fact that foreign languages have been found to affect not only the expected linguistic domains, but surprisingly, other non-linguistic domains such as cognitive control, attention, inhibition, and working memory. Somehow, learning languages seems to affect executive/brain functioning. In the literature, this is referred to as the bilingual advantage, meaning that people who learn two or more languages seem to outperform monolinguals in executive functioning skills. In this Special Issue, we first present studies that investigate the bilingual advantage. We also go one step further, by focusing on factors that modulate the effect of bilingualism on cognitive control. In the second, smaller part of our Special Issue, we focus on the cognitive reserve hypothesis with the aim of addressing the following questions: Does the daily use of two or more languages protect the aging individual against cognitive decline? Does lifelong bilingualism protect against brain diseases, such as dementia, later in life?
Author: Mahmut Caliskan Publisher: BoD – Books on Demand ISBN: 9535100939 Category : Medical Languages : en Pages : 376
Book Description
Analysis of Genetic Variation in Animals includes chapters revealing the magnitude of genetic variation existing in animal populations. The genetic diversity between and within populations displayed by molecular markers receive extensive interest due to the usefulness of this information in breeding and conservation programs. In this concept molecular markers give valuable information. The increasing availability of PCR-based molecular markers allows the detailed analyses and evaluation of genetic diversity in animals and also, the detection of genes influencing economically important traits. The purpose of the book is to provide a glimpse into the dynamic process of genetic variation in animals by presenting the thoughts of scientists who are engaged in the generation of new idea and techniques employed for the assessment of genetic diversity, often from very different perspectives. The book should prove useful to students, researchers, and experts in the area of conservation biology, genetic diversity, and molecular biology.
Author: Véronique Lacoste Publisher: John Benjamins Publishing ISBN: 9027252653 Category : Language Arts & Disciplines Languages : en Pages : 308
Book Description
This book investigates variation in the classroom speech of 7-year-old children who are learning Standard Jamaican English as a second language variety in rural Jamaica. For sociolinguists and second language/dialect researchers interested in the acquisition and use of sociolinguistic variables, an important challenge is how to efficiently account for language learning mechanisms and use. To date, this book is the first to offer an interdisciplinary look into phonological and phonetic variation observed in primary school in Jamaica, that is from the perspective of classic variationist and quantitative sociolinguistics and a usage-based model. Both frameworks function as explanatory for the children s learning of phono-stylistic variation, which they encounter in their immediate linguistic environment, i.e. most often through their teachers speech. This book is intended for sociolinguists interested in child language variation, linguists working on formal aspects of the languages of the Caribbean, applied linguists concerned with the teaching and learning of second language phonology, and any researchers interested in applying variationist and quantitative methods to classroom second language learning."
Author: Benedikt Hallgrímsson
Author: Benedikt Hallgrímsson
Author: 
Author: Pilar Barbosa
Author: N. H. Bingham
Author: Benedikt Szmrecsanyi
Author: Theresa Biberauer
Author: Freddy Bugge Christiansen
Author: Maurits Van den Noort
Author: Mahmut Caliskan
Author: Véronique Lacoste