Theoretical Studies on Sex Ratio Evolution. (MPB-22), Volume 22


Book Description

This book deals with a key area of population genetics: the ratio of the sexes in a population, or the allocation of resources to male versus female reproductive function. Samuel Karlin and Sabin Lessard establish the formal theoretical aspects of the evolution of sex ratio within the constraints of genetic mechanisms of sex determination. Their results generalize and unify existing work on the topic, strengthening previous conceptions in some cases and, in other instances, offering new directions of research. There are two main approaches to understanding the causes and effects of sex ratio. One approach focuses on the optimization and adaptive functions of sex allocation, while the other emphasizes the consequences of genetic sex determination mechanisms. In discussing the utility of these two approaches, Professors Karlin and Lessard examine the principal sex-determining mechanisms and facts involved in sex ratio representations, the various genetic and environmental factors that contribute to adaptive sex expression, and the evolution of sex determining systems and controls. From a population genetic perspective, the authors derive evolutionary properties in support of the high incidence of 1:1 sex ratio in natural populations and investigate the conditions that can explain the occurrence of biased sex ratio.







Mathematical and Statistical Developments of Evolutionary Theory


Book Description

Mathematical and statistical approaches to evolutionary theory are numerous. The NATO Advanced Study Institute (ASI) held at the Universite de Montreal, Montreal, August 3-21, 1987, was an opportunity to review most of the classical approaches and to study the more recent developments. The participation of theoretical biologists and geneticists as well as applied mathematicians and statisticians made possible exchanges of ideas between students and scholars having different views on the subject. These Proceedings contain the lecture notes of seven (7) of the eleven (11) series of lectures that were given. ESS (Evolutionarily Stable Stragety) theory is considered from many perspectives, from a game-theoretic approach to understanding behavior and evolution (W.G.S. Hines), and a systematic classification of properties and patterns of ESS's (C. Cannings) to particular applications of the differential geometry of the Shahshahani metric (E. Akin). Extensions of ESS theory to sexual populations and finite populations, not to mention games between relatives, are presented (W.G.S. Hines). Special attention is given to the classical game called the War of Attrition but with n players and random rewards (C. Cannings). The Shahshahani metric is also used to show the occurrence of cycling in the two-locus, two-allele model (E. Akin). Various inference problems in population genetics are adressed. Procedures to detect and measure selection components and polymorphism (in particular, the Wahlund effect) at one or several loci from mother-offspring combinations in natural populations are discussed at length (F.B. Christiansen).




Brand Gender


Book Description

This book explores ways to drive and increase a brand’s most important property, its equity. Focussing on gender, the author analyses the impact of assigning personalities and characteristics to products and how this can affect the management of brands on a global scale. Using detailed examples, the author argues that brands with low masculine and feminine characteristics have the lowest equity, whilst brands with both high feminine and masculine characteristics are shown to have the strongest equity. Including notions of androgyny in brands, this significant study reveals the different factors which can affect a brand being perceived as either masculine or feminine. Aiming to develop a comprehensive theory and provide practitioners with a guide to increasing the equity of their brands, this controversial and pioneering book lays the foundation for creating a global brand personality model.




The Logic of Chance


Book Description

The Logic of Chance offers a reappraisal and a new synthesis of theories, concepts, and hypotheses on the key aspects of the evolution of life on earth in light of comparative genomics and systems biology. The author presents many specific examples from systems and comparative genomic analysis to begin to build a new, much more detailed, complex, and realistic picture of evolution. The book examines a broad range of topics in evolutionary biology including the inadequacy of natural selection and adaptation as the only or even the main mode of evolution; the key role of horizontal gene transfer in evolution and the consequent overhaul of the Tree of Life concept; the central, underappreciated evolutionary importance of viruses; the origin of eukaryotes as a result of endosymbiosis; the concomitant origin of cells and viruses on the primordial earth; universal dependences between genomic and molecular-phenomic variables; and the evolving landscape of constraints that shape the evolution of genomes and molecular phenomes. "Koonin's account of viral and pre-eukaryotic evolution is undoubtedly up-to-date. His "mega views" of evolution (given what was said above) and his cosmological musings, on the other hand, are interesting reading." Summing Up: Recommended Reprinted with permission from CHOICE, copyright by the American Library Association.




An Introduction to Stochastic Modeling


Book Description

An Introduction to Stochastic Modeling provides information pertinent to the standard concepts and methods of stochastic modeling. This book presents the rich diversity of applications of stochastic processes in the sciences. Organized into nine chapters, this book begins with an overview of diverse types of stochastic models, which predicts a set of possible outcomes weighed by their likelihoods or probabilities. This text then provides exercises in the applications of simple stochastic analysis to appropriate problems. Other chapters consider the study of general functions of independent, identically distributed, nonnegative random variables representing the successive intervals between renewals. This book discusses as well the numerous examples of Markov branching processes that arise naturally in various scientific disciplines. The final chapter deals with queueing models, which aid the design process by predicting system performance. This book is a valuable resource for students of engineering and management science. Engineers will also find this book useful.




Insect Genomics


Book Description

This volume focuses on the latest methods used to sequence, assemble, and analyze insect genomes. The collection of protocols in this book provides an introduction to the workflows and bioinformatics tools available for researchers. The chapters cover a range of useful topics such as determining genome size by flow cytometry; High Molecular Weight DNA extraction; improvements to a genome assembly provided by long-range sequencing approaches; assessments of orthology and single-copy genes at different phylogenetic levels; detecting regulatory regions with FAIRE, RAMPAGE, and computational analysis of cis-regulatory modules in insects; bioinformatics analysis of epigenetic modifications, high-throughput scanning of insect genomes (TEEseq) for the presence of endosymbionts, and leveraging genome sequence information to design RNAi strategies. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and thorough, Insect Genomics: Methods and Protocols is a valuable resource for graduate students, postdocs, and novice research scientists who are interested in learning more about this developing field.







Theoretical Studies on Sex Ratio Evolution


Book Description

This book deals with a key area of population genetics: the ratio of the sexes in a population, or the allocation of resources to male versus female reproductive function. Samuel Karlin and Sabin Lessard establish the formal theoretical aspects of the evolution of sex ratio within the constraints of genetic mechanisms of sex determination. Their results generalize and unify existing work on the topic, strengthening previous conceptions in some cases and, in other instances, offering new directions of research. There are two main approaches to understanding the causes and effects of sex ratio. One approach focuses on the optimization and adaptive functions of sex allocation, while the other emphasizes the consequences of genetic sex determination mechanisms. In discussing the utility of these two approaches, Professors Karlin and Lessard examine the principal sex-determining mechanisms and facts involved in sex ratio representations, the various genetic and environmental factors that contribute to adaptive sex expression, and the evolution of sex determining systems and controls. From a population genetic perspective, the authors derive evolutionary properties in support of the high incidence of 1:1 sex ratio in natural populations and investigate the conditions that can explain the occurrence of biased sex ratio.




Who's Who in America, 1996


Book Description

"We make very heavy use of WHO'S WHO IN AMERICA in our library. It's used daily to check biographical facts on people of distinction."--MARIE WATERS, HEAD OF COLLECTION DEVELOPMENT, UNIVERSITY OF CALIFORNIA AT LOS ANGELES. Marquis Who's Who is proud to announce the Golden Anniversary 50th Edition of WHO'S WHO IN AMERICA. This, the world's preeminent biographical resource, keeps pace with a changing America with more than 17,500 new entries each year. AND it speeds research with the Geographic/Professional Indexes. ANNUAL UPDATING enables Marquis Who's Who to bring users more new names & to update more existing entries each year. Every entry is selected & researched to ensure the most current, accurate biographical data for Who's Who users. The Geographical/Professional Indexes makes WHO'S WHO IN AMERICA an even more useful research tool. Now users can identify & locate prospective partners & new clients by profession in any of 38 categories, as well as by country, state, or province, or city. Essential for quickly finding the entries you need. More than 92,000 leaders decision-makers, & innovators from every important field - business, finance, government, education, science & technology, the arts & more - are profiled in this Golden Anniversary 50th Edition. Entries include name, occupation, vital statistics, parents, marriage, children, education, career, civic & political activities, writings & creative works, awards, professional memberships, & office address. When you need authoritative, accurate facts on our nation's leaders, go to the preeminent record of American achievement that offers new information EVERY year: Marquis WHO'S WHO IN AMERICA.