Molecular Evolution in Two Species of Drosophila

Molecular Evolution in Two Species of Drosophila PDF Author: Sophie Marion de Procé
Publisher:
ISBN:
Category :
Languages : en
Pages : 141

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Book Description

Molecular Evolution in Two Species of Drosophila

Molecular Evolution in Two Species of Drosophila PDF Author: Sophie Marion de Procé
Publisher:
ISBN:
Category :
Languages : en
Pages : 141

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Book Description


Molecular Evolution and Phylogenetics

Molecular Evolution and Phylogenetics PDF Author: Masatoshi Nei
Publisher: Oxford University Press
ISBN: 0199881227
Category : Science
Languages : en
Pages : 444

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Book Description
During the last ten years, remarkable progress has occurred in the study of molecular evolution. Among the most important factors that are responsible for this progress are the development of new statistical methods and advances in computational technology. In particular, phylogenetic analysis of DNA or protein sequences has become a powerful tool for studying molecular evolution. Along with this developing technology, the application of the new statistical and computational methods has become more complicated and there is no comprehensive volume that treats these methods in depth. Molecular Evolution and Phylogenetics fills this gap and present various statistical methods that are easily accessible to general biologists as well as biochemists, bioinformatists and graduate students. The text covers measurement of sequence divergence, construction of phylogenetic trees, statistical tests for detection of positive Darwinian selection, inference of ancestral amino acid sequences, construction of linearized trees, and analysis of allele frequency data. Emphasis is given to practical methods of data analysis, and methods can be learned by working through numerical examples using the computer program MEGA2 that is provided.

Molecular Evolution

Molecular Evolution PDF Author: Roderick D.M. Page
Publisher: John Wiley & Sons
ISBN: 1444313363
Category : Science
Languages : en
Pages : 352

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Book Description
The study of evolution at the molecular level has given the subject of evolutionary biology a new significance. Phylogenetic 'trees' of gene sequences are a powerful tool for recovering evolutionary relationships among species, and can be used to answer a broad range of evolutionary and ecological questions. They are also beginning to permeate the medical sciences. In this book, the authors approach the study of molecular evolution with the phylogenetic tree as a central metaphor. This will equip students and professionals with the ability to see both the evolutionary relevance of molecular data, and the significance evolutionary theory has for molecular studies. The book is accessible yet sufficiently detailed and explicit so that the student can learn the mechanics of the procedures discussed. The book is intended for senior undergraduate and graduate students taking courses in molecular evolution/phylogenetic reconstruction. It will also be a useful supplement for students taking wider courses in evolution, as well as a valuable resource for professionals. First student textbook of phylogenetic reconstruction which uses the tree as a central metaphor of evolution. Chapter summaries and annotated suggestions for further reading. Worked examples facilitate understanding of some of the more complex issues. Emphasis on clarity and accessibility.

The Causes of Molecular Evolution

The Causes of Molecular Evolution PDF Author: John H. Gillespie
Publisher: Oxford University Press
ISBN: 0195357744
Category : Science
Languages : en
Pages : 351

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Book Description
This work provides a unified theory that addresses the important problem of the origin and maintenance of genetic variation in natural populations. With modern molecular techniques, variation is found in all species, sometimes at astonishingly high levels. Yet, despite these observations, the forces that maintain variation within and between species have been difficult subjects of study. Because they act very weakly and operate over vast time scales, scientists must rely on indirect inferences and speculative mathematical models. However, despite these obstacles, many advances have been made. The author's research in molecular genetics, evolution, and bio-mathematics has enabled him to draw on this work, and present a coherent and valuable view of the field. The book is divided into three parts. The first consists of three chapters on protein evolution, DNA evolution, and molecular mechanisms. This section reviews the experimental observations on genetic variation. The second part gives a unified treatment of the mathematical theory of selection in a fluctuating environment. The final two chapters combine the earlier assessments in a treatment of the scientific status of two competing theories for the maintenance of genetic variation. Steeped in the enormous advances population genetics has made over the past 25 years, this book has proven highly popular among human geneticists, biologists, evolutionary theorists, and bio-mathematicians.

Drosophila melanogaster, Drosophila simulans: So Similar, So Different

Drosophila melanogaster, Drosophila simulans: So Similar, So Different PDF Author: Pierre Capy
Publisher: Springer Science & Business Media
ISBN: 940070965X
Category : Science
Languages : en
Pages : 292

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Book Description
This book brings together most of the information available concerning two species that diverged 2-3 million years ago. The objective was to try to understand why two sibling species so similar in several characteristics can be so different in others. To this end, it was crucial to confront all data from their ecology and biogeography with their behavior and DNA polymorphism. Drosophila melanogaster and Drosophila simulans are among the two sibling species for which a large set of data is available. In this book, ecologists, physiologists, geneticists, behaviorists share their data on the two sibling species, and several scenarios of evolution are put forward to explain their similarities and divergences. This is the first collection of essays of its kind. It is not the final point of the analyses of these two species since several areas remain obscure. However, the recent publication of the complete genome of D. melanogaster opens new fields for research. This will probably help us explain why D. melanogaster and D. simulans are sibling species but false friends.

Non-Neutral Evolution

Non-Neutral Evolution PDF Author: Brian Golding
Publisher: Springer Science & Business Media
ISBN: 1461523834
Category : Science
Languages : en
Pages : 261

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Book Description
All organisms--from the AIDS virus, to bacteria, to fish, to humans--must evolve to survive. Despite the central place of evolution within biology, there are many things that are still poorly understood. For Charles Darwin, the driving force behind all evolution was natural selection. More recently, evolutionary biologists have considered that many mutations are essentially neutral with respect to natural selection. Many questions remain. Are molecular differences between species adaptive? Are differences within species adaptive? Modern biotechnology has enabled us to identify precisely the actual DNA structure from many individuals within a population, and thus to see how these DNA sequences have changed over time and to answer some of these questions. At the same time, this knowledge poses new challenges to our ability to understand the observed patterns. This exciting volume outlines the biological problems, provides new perspectives on theoretical treatments of the consequences of natural selection, examines the consequences of molecular data, and relates molecular events to speciation. Every evolutionary biologist will find it of interest.

Genetics and the Origin of Species

Genetics and the Origin of Species PDF Author: Theodosius Dobzhansky
Publisher:
ISBN:
Category : Genetics
Languages : en
Pages : 364

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Book Description


Speciation and Molecular Evolution in the Drosophila Virilis Species Group

Speciation and Molecular Evolution in the Drosophila Virilis Species Group PDF Author: Holly K. Hilton
Publisher:
ISBN:
Category :
Languages : en
Pages : 192

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Book Description


Fruit Flies (Tephritidae)

Fruit Flies (Tephritidae) PDF Author: Martin Aluja
Publisher: CRC Press
ISBN: 9780849312755
Category : Science
Languages : en
Pages : 1180

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Book Description
Fruit flies (Diptera: Tephritidae) are among the most destructive agricultural pests in the world, eating their way through acres and acres of citrus and other fruits at an alarming rate and forcing food and agriculture agencies to spend millions of dollars in control and management measures. But until now, the study of fruit flies has been traditionally biased towards applied aspects (e.g., management, monitoring, and mass rearing)-understandable, given the tremendous economic impact of this species. This work is the first that comprehensively addresses the study of the phylogeny and the evolution of fruit fly behavior. An international group of highly renowned scientists review the current state of knowledge and include considerable new findings on various aspects of fruit fly behavior, phylogeny and related subjects. In the past, the topics of phylogeny and evolution of behavior were barely addressed, and when so, often superficially. Fruit Flies (Tephritidae): Phylogeny and Evolution of Behavior is a definitive treatment, covering all behaviors in a broad range of tephritids. This volume is divided into eight sections:

The Neutral Theory of Molecular Evolution

The Neutral Theory of Molecular Evolution PDF Author: Motoo Kimura
Publisher: Cambridge University Press
ISBN: 1139935674
Category : Science
Languages : en
Pages : 388

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Book Description
Motoo Kimura, as founder of the neutral theory, is uniquely placed to write this book. He first proposed the theory in 1968 to explain the unexpectedly high rate of evolutionary change and very large amount of intraspecific variability at the molecular level that had been uncovered by new techniques in molecular biology. The theory - which asserts that the great majority of evolutionary changes at the molecular level are caused not by Darwinian selection but by random drift of selectively neutral mutants - has caused controversy ever since. This book is the first comprehensive treatment of this subject and the author synthesises a wealth of material - ranging from a historical perspective, through recent molecular discoveries, to sophisticated mathematical arguments - all presented in a most lucid manner.