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Author: Ian Hardy
Publisher:
ISBN: 9780511069932
Category : Sex determination, Genetic
Languages : en
Pages : 424
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Book Description
Sex ratios, the proportions of males and females in any given species, are important in evolutionary and behavioural ecology. This volume explores the context to and methods for many aspects of research on sex ratios, and will be an indispensable reference for all those working in this area.
Author: Ian Hardy
Publisher:
ISBN: 9780511069932
Category : Sex determination, Genetic
Languages : en
Pages : 424
Get Book Here
Book Description
Sex ratios, the proportions of males and females in any given species, are important in evolutionary and behavioural ecology. This volume explores the context to and methods for many aspects of research on sex ratios, and will be an indispensable reference for all those working in this area.
Author: M. E. N. Majerus
Publisher: Princeton University Press
ISBN: 9780691009810
Category : Science
Languages : en
Pages : 288
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Book Description
Publisher Description
Author: Marcia Guttentag
Publisher: SAGE Publications, Incorporated
ISBN:
Category : Social Science
Languages : en
Pages : 278
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Book Description
`The basic premise of this provocative book is a startling one - that sex ratios among people on the marriage market have profound consequences for a wide variety of attitudes, values, and behaviors, from sexual mores and behavior to shifts in economic power...the authors share with the reader a wealth of fascinating data and information...a book which is...fascinating, scholarly, provocative and exceedingly well-written.' -- Canadian Journal of Sociology, Vol 10 No 2 `Written by social scientists with training and considerable publication in social psychology, this book is a unique contribution to the literature on women, sex roles, and the history of relations between men and women. No similar book is available to
Author: Valerie M. Hudson
Publisher: Mit Press
ISBN: 9780262083256
Category : History
Languages : en
Pages : 329
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Book Description
How the proliferation of young surplus males in India and China—called "bare branches" by the Chinese—poses a threat to international security.
Author: Monica A. Geber
Publisher: Springer Science & Business Media
ISBN: 3662039087
Category : Science
Languages : en
Pages : 319
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Book Description
Written by the leading experts in the field, this book examines the evolutionary advantages of gender dimorphism and sexual dimorphism in flowering plants. Divided into three sections: the first introduces readers to the tremendous variety of breeding systems and their evolution in plants and sets the stage for a consideration of the evolution of dimorphism in reproductive and non-reproductive characters. The second section deals with the evolution of secondary sexual characters, including the theory related to the evolution of sexual dimorphism and its empirical patterns, while the last section deals with the genetics of gender expression and of secondary sexual characters.
Author: Neil G. Bennett
Publisher:
ISBN:
Category : Health & Fitness
Languages : en
Pages : 298
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Book Description
Sex Selection of Children ...
Author: Nicholas B. Davies
Publisher: Oxford University Press, USA
ISBN:
Category : Nature
Languages : en
Pages : 292
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Book Description
At first sight just a small brown bird, the dunnock's unobtrusive appearance belies its extraordinary behavior and mating patterns. This book gives a full account of the mating systems of the dunnock or hedge sparrow, Prunella modularis, which include pairs, a male with two females, two males with one female, and several males with several females. Detailed observations, elegant field experiments, and DNA fingerprinting are combined to show how this variable social organization arises from selfish individuals competing to maximize their own reproductive success. Further experiments reveal how the cuckoo may thwart the dunnock's parental efforts. David Quinn's exquisite drawings provide a visual summary of the bird's behavior. All students of ecology, evolution, and animal behavior will want to be familiar with this work, which addresses the wider issues of the influence of ecology on mating systems and the evolutionary significance of conflict within and between species. This is the third volume in the Oxford Series in Ecology and Evolution, and the first in this series to address behavioral ecology.
Author: Eric L. Charnov
Publisher: Princeton University Press
ISBN: 0691083126
Category : Science
Languages : en
Pages : 367
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Book Description
This book is the first comprehensive treatment of sex allocation from the standpoint of modern evolutionary theory. It shows how the determination of sex ratio, resource allocation to sperm versus egg within simultaneous hermaphroditism, and the evolution of sex reversal can he explained as examples of a single process. The genetical theory, developed mostly with graphical arguments, also specifies when hermaphroditism and dioecy are themselves evolutionary stable. The work balances theory with field and laboratory research, providing critical tests of the theory by empirical studies of sex ratio in parasitoid wasps and mites, sex reversal in shrimp and coral reef fish, and allocation of resources to pollen versus seeds in higher plants. In addition, the author oilers an encyclopedic review of the field and laboratory work of other scientists, reviews many as yet untested hypotheses in sex allocation, and points toward numerous plant and animal systems that hold promise for future tests.
Author: Ravinder Kaur (Professor)
Publisher:
ISBN: 9788125062493
Category : China
Languages : en
Pages : 0
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Book Description
Contributed articles.
Author: R. Reinboth
Publisher: Springer Science & Business Media
ISBN: 364266069X
Category : Science
Languages : en
Pages : 464
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Book Description
When Richard Goldschmidt' coined the term "intersexuality" in 1915, he intended it to apply to normally dioecious species which exhibit some kind of mixture between male and female characters. However, as knowledge of the bewildering variability present in the sexual orga nization of members of the animal kingdom has increased, the original meaning of the word has changed. Today many authors define inter sexuality as "the presence of both male and female characteristics, or of intermediate sexual characteristics, in a single individual".2 This more extensive and widely accepted concept justifies the title of our book •. Among all the anatomical and physiological features of living organisms the reproductive system has a unique importance for the perpetuation of the species. Conversely, reproductive processes are of little or no account for the viability of the individual. Therefore, within the framework of general biology reproduction has all too often been looked at solely from the point of view of genetics. Lively discussions about genotypic versus phenotypic sex determination long dominated the sci entific literature on sexuality in animals; this one-sided emphasis has tended to obscure many important facets of an organism's ability to reproduce. Recent developments in current biological research have brought the classic problem of sex differentiation into focus again, and the rapid progress being made in comparative endocrinology has added a new di mension to the study of reproductive biology.
