Product Description
This study begins with the historical evolution of work in avian genetics, proceeding from a discussion of Mendelian (ie. classical) genes to explanations of the following:


Quantitative genetics


Chromosomal genetics


Biochemical genetics


Extensive treatment of population genetics


Some examples of long-term studies


Key Features
* Avian Genetics begins with the historical evolution of work in avian genetics, proceeding from a discussion of Mendelian (i.e., classical) genes to explanations of the following:
* Quantitative genetics
* Chromosomal genetics
* Biochemical genetics
* Extensive treatment of population genetics
* Some examples of long-term studies ... Read more

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This book focuses on the role of both biological and behavioural factors in the fertility and specific patterns of health and disease of minority populations living in developed and less developed countries. The importance of marriages contracted between close relatives is stressed, as over 900 million people inhabit countries where 20 to 50 per cent of marriages are inbred. Past, present and future trends in population mixing are evaluated, with special consideration of their effects on the health of minorities. The research data is based on the practical experience of the editors and contributors. ... Read more

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Wild emmer is the progenitor of most cultivated wheats and thus an important source of wheat improvement. This book draws the results from multidisciplinary studies on the ecological, genetic, genomic, agronomic, and evolutionary aspects of wild emmer, conducted at many labs around the world.
It is divided into the following parts: Origin and Evolution of Wheat - Population Genetics of Wild Emmer Wheat at the Protein and DNA Levels - Genetic Resources of Wild Emmer for Wheat Improvement - Genome Organization and Genetic Mapping - Conclusions and Prospects.
The authors describe the evolution of wild emmer as a model organism of a selfer in evolutionary biology, and its rich potential genetic resources for wheat improvement. ... Read more

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"Nothing in biology makes sense except in the light of evolution." This statement serves as a motto of sort for the life's work of Theodosius Dobzhansky, whom Stephen Jay Gould called "the greatest evolutionary geneticist of our times." Featuring a veritable who's who of contemporary geneticists, and evolutionary and molecular, this collection is both a reflection on the continuing legacy of Dobzhansky's work -as both a theoretician and a laboratory and field investigator and a state-of-the-art appraisal of the field today. In particular, the book features current research building on Dobzhansky's pioneering field studies of , which were critical in the formulation of some of his most important conclusions about the genetic structure of populations. Among these, three stand out, and now serve as the theortetical basis of evolutionary biology: populations are genetically heterogeneous collections of dissimilar individuals, and species are heterogeneous collections of genetically dissimilar populations; speciation is a stage in the evolutionary process, and populations that have passed that stage can no longer exchange genes; and the exchange of genes between species is prevented by isolating mechanisms whose initial genetic basis is provided by two or more complementary genes but whose elaboration is the result of natural selection acting in quantifiable, comprehensible ways. Starting from these premises, Dobzhansky's students and intellecual heirs whose works are collected here have revolutionized our fundamental ideas about how evolution works. ... Read more

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This digital document is a journal article from Limnologica, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
To determine the gene flow of Chaoborus crystallinus, populations throughout Europe were sampled. To test if the gene flow is higher within regions than between regions and to investigate if regional populations may act as metapopulations, four regions with several populations each were examined. For a detailed analysis of the regional gene flow, subregions within one region were analysed. Allozymes and mitochondrial restriction fragment length polymorphism (RFLP) were used to estimate the relative amounts of gene flow. On the European scale gene flow between populations within regions is higher than between regions. On the regional scale, gene flow between subregions is higher than between populations within subregions. Generally, the genetic differentiation between populations within regions is higher for the mitochondrial RFLP data than for the allozyme data. These results suggest that most of the dispersal is female dominated and mostly takes place between populations within regions. Due to this extensive regional gene flow, local adaptation may be influenced by regional processes. This might have interesting implications for the coevolution of the predator C. crystallinus and its plankton prey. ... Read more

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Genetic research and testing is not limited to individuals and their families. Increasingly, there is focus on communities and even whole populations. This raises legal and socio-ethical and issues that have not been addressed.In this age of international biobanking involving populations, are current legal and ethical approaches sufficient? This book of selected papers covers population research and banking as well as accompanying confidentiality, and governance concerns. Possible commercialization, patents, benefit sharing, discrimination, and the role of patient organizations and of developing countries are also discussed. New perspectives and models are provided. The book concludes with a Statement of Principles on the Ethical Conduct of Human Genetic Research Involving Populations. Policymakers, academics, legislators and researchers will find this book to be current and controversial. The human genome may be mapped but the legal and socio-ethical debate is far from over. ... Read more

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To cope with the abiotic stress-induced osmotic problems, plants adapt by either increasing uptake of inorganic ions from the external solution, or by de novo synthesis of organic compatible solutes acting as osmolytes. Of the osmoregulants and protectants discussed in this volume, trehalose, fructans, ectoine and citrulline, which are generated in different species, in osmotically ineffective amounts, mitigate the stress effects on cells/plants and improve productivity. There are several pieces of encouraging research discussed in this volume showing significant improvement in stress tolerance and in turn productivity by involving genetic engineering techniques. ... Read more