The Descent of Human Sex Ratio at Birth PDF Download

Author: Éric Brian
Publisher: Springer Science & Business Media
ISBN: 140206036X
Category : Social Science
Languages : en
Pages : 263

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Book Description
This is an attempt to renew our links with the oldest traditions of scholarly thinking, but is also a well-tempered reflection on today’s work in objectivization. After a deconstruction of the past and present conditions of scientific understanding of human sex-ratio at birth, the authors propose a reconstruction of the dynamics of the phenomenon based on stochastics. Appendices provide information on the first expression of sex ratio trends, as well as a comparison of Darwin’s treatments of the subject.

Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309132975
Category : Medical
Languages : en
Pages : 287

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Book Description
It's obvious why only men develop prostate cancer and why only women get ovarian cancer. But it is not obvious why women are more likely to recover language ability after a stroke than men or why women are more apt to develop autoimmune diseases such as lupus. Sex differences in health throughout the lifespan have been documented. Exploring the Biological Contributions to Human Health begins to snap the pieces of the puzzle into place so that this knowledge can be used to improve health for both sexes. From behavior and cognition to metabolism and response to chemicals and infectious organisms, this book explores the health impact of sex (being male or female, according to reproductive organs and chromosomes) and gender (one's sense of self as male or female in society). Exploring the Biological Contributions to Human Health discusses basic biochemical differences in the cells of males and females and health variability between the sexes from conception throughout life. The book identifies key research needs and opportunities and addresses barriers to research. Exploring the Biological Contributions to Human Health will be important to health policy makers, basic, applied, and clinical researchers, educators, providers, and journalists-while being very accessible to interested lay readers.

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: T. H. Clutton-Brock
Publisher: University of Chicago Press
ISBN: 9780226110592
Category : Science
Languages : en
Pages : 554

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Book Description
"This book is well worth buying for its detailed summaries of the 25 studies, many of which are classic long-term projects, and for its insights into the factors determining reproductive success."—William J. Sutherland, TREE "A must read for anyone interested in evolution, mating/social systems, and population ecology."—John L. Koprowski, IJournal of Insect Behavior

Author: Marvin Zuckerman
Publisher: Cambridge University Press
ISBN: 9780521437707
Category : Medical
Languages : en
Pages : 484

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Book Description
This book is about a trait describing variations in the universal need for novel and intense stimulation and its expressions in various risky kinds of behaviour (including driving habits, health, gambling, financial risk, alcohol and drug use and abuse, sexual behaviour, and sports). Sensation seeking is also important in preferences for various vocations, media forms and content, food, humour and social attitudes. Compatibility in the trait influences premarital and marital relationship satisfaction. Its modes of assessment, behavioural expressions, and genetic and psychobiological bases are described by one of the leading researchers in this field. This book presents the only available study of this fascinating topic and it will be sure to interest researchers and their students active in personality research.

Author: National Academy of Sciences
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 388

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Book Description
The Arthur M. Sackler Colloquia of the National Academy of Sciences address scientific topics of broad and current interest, cutting across the boundaries of traditional disciplines. Each year, four or five such colloquia are scheduled, typically two days in length and international in scope. Colloquia are organized by a member of the Academy, often with the assistance of an organizing committee, and feature presentations by leading scientists in the field and discussions with a hundred or more researchers with an interest in the topic. Colloquia presentations are recorded and posted on the National Academy of Sciences Sackler colloquia website and published on CD-ROM. These Colloquia are made possible by a generous gift from Mrs. Jill Sackler, in memory of her husband, Arthur M. Sackler.

Author:
Publisher: Academic Press
ISBN: 0128151455
Category : Medical
Languages : en
Pages : 3905

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Book Description
Encyclopedia of Reproduction, Second Edition, Six Volume Set comprehensively reviews biology and abnormalities, also covering the most common diseases in humans, such as prostate and breast cancer, as well as normal developmental biology, including embryogenesis, gestation, birth and puberty. Each article provides a comprehensive overview of the selected topic to inform a broad spectrum of readers, from advanced undergraduate students, to research professionals. Chapters also explore the latest advances in cloning, stem cells, endocrinology, clinical reproductive medicine and genomics. As reproductive health is a fundamental component of an individual’s overall health status and a central determinant of quality of life, this book provides the most extensive and authoritative reference within the field. Provides a one-stop shop for information on reproduction that is not available elsewhere Includes extensive coverage of the full range of topics, from basic, to clinical considerations, including evolutionary advances in molecular, cellular, developmental and clinical sciences Includes multimedia and interactive teaching tools, such as downloadable PowerPoint slides, video content and interactive elements, such as the Virtual Microscope

Author: Brian C. Hales
Publisher: Greg Kofford Books
ISBN:
Category : Religion
Languages : en
Pages : 333

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Book Description
Americans of Joseph Smith’s day, steeped in the stories and prophecies of the King James Bible, certainly knew about plural marriage; but it was a curiosity relegated to the misty past of patriarchs Abraham and Jacob, who never gave reasons for their polygamy. It was long abandoned, Christians understood, by the time Jesus set forth the dominating law of the New Testament. But how did Joseph Smith understand it? Where did it fit in the “restitution of all things” (Acts 3:21) predicted in the New Testament? What part did it play in the global ideology declared by this modern prophet who produced new scripture, new revelation, and new theology? During Joseph Smith’s lifetime, polygamy was taught and practiced in intense secrecy, with the result that he never fully explained its doctrinal underpinnings or systematized its practice. As a result, reconstructing Joseph Smith’s theology of plurality is a task that has seldom been undertaken. Most theological examinations have either focused on its development during Brigham Young’s Utah period, with its need to resist increasing federal legislative and judicial pressures, or the efforts of twentieth-century and contemporary “fundamentalists” who continue to marry a plurality of wives. Volume 3 of this three-volume work builds on the carefully reconstructed history of the development of Mormon polygamy during Joseph Smith’s lifetime, then assembles the doctrinal principles from his recorded addresses, the diary entries of those closely associated with him, and his broader teachings on the related topics of obedience to God’s will, marriage and family relations, and the mechanics of eternal progression, salvation, and exaltation. The revelation he dictated in July 1843 that authorized the practice of eternal and plural marriage receives unprecedented examination and careful interpretation that illuminate this significant document and its underlying doctrines. Attempts to explain the history of Joseph Smith’s polygamy without comprehending the theological principles undergirding its practice will always be incomplete and skewed. This volume, which takes those principles and evidences with the utmost seriousness, has produced the most important explanation of “why” this ancient practice reemerged among the Latter-day Saints on the shores of the Mississippi in the early 1840s.

Author: Eric L. Charnov
Publisher: Princeton University Press
ISBN: 0691210055
Category : Science
Languages : en
Pages : 369

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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: Kristen J. Navara
Publisher: Springer
ISBN: 3319712713
Category : Science
Languages : en
Pages : 246

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Book Description
There is extensive evidence that vertebrates of all classes have the ability to control the sexes of the offspring they produce. Despite dramatic differences in the mechanisms by which different taxa determine the initial sex of offspring, each group has found its own way of adjusting offspring sex ratios in response to social and environmental cues. For example, stress is a well-known modulator of offspring sex in members of all groups studied to date. Food availability, and limitation in particular, is another common cue that stimulates biases in offspring sex ratios in a wide variety of species. Offspring sex can be adjusted at the primary level, which occurs prior to conception, or at the secondary level, during embryonic development. While the mechanistic pathways that ultimately result in sex ratio biases and the developmental time-points sensitive to those mechanisms likely differ among taxa, the key involvement of steroid hormones in the process of sex ratio adjustment appears to be pervasive throughout. This book reviews the systems of sex determination at play in different vertebrate groups, summarizes the evidence that members of all vertebrate taxa can facultatively adjust offspring sex, and discusses when and how these adjustments can take place.