Choosing Sexes
DOWNLOAD
Download Choosing Sexes PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Choosing Sexes book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Choosing Sexes
DOWNLOAD
Author : Kristen J. Navara
language : en
Publisher: Springer
Release Date : 2018-02-01
Choosing Sexes written by Kristen J. Navara and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-01 with Science categories.
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.
How To Choose The Sex Of Your Baby
DOWNLOAD
Author : Landrum Brewer Shettles
language : en
Publisher: Main Street Books
Release Date : 1989
How To Choose The Sex Of Your Baby written by Landrum Brewer Shettles and has been published by Main Street Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Family & Relationships categories.
A revised edition of the complete guide to the gender selection method best supported by scientific evidence, with evaluations of home ovulation tests, commercially available gender selection kits, and sophisticated clinical tests.
Unnatural Selection
DOWNLOAD
Author : Mara Hvistendahl
language : en
Publisher: ReadHowYouWant.com
Release Date : 2011
Unnatural Selection written by Mara Hvistendahl and has been published by ReadHowYouWant.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Political Science categories.
"Lianyungang, a booming port city, has China's most extreme gender ratio for children under four: 163 boys for every 100 girls. These numbers don't seem terribly grim, but in ten years, the skewed sex ratio will pose a colossal challenge. By the time those children reach adulthood, their generation will have twenty-four million more men than women. The prognosis for China's neighbors is no less bleak: Asia now has 163 million females "missing" from its population. Gender imbalance reaches far beyond Asia, affecting Georgia, Eastern Europe, and cities in the U.S. where there are significant immigrant populations. The world, therefore, is becoming increasingly male, and this mismatch is likely to create profound social upheaval. Historically, eras in which there have been an excess of men have produced periods of violent conflict and instability. Mara Hvistendahl has written a stunning, impeccably-researched book that does not flinch from examining not only the consequences of the misbegotten policies of sex selection but Western complicity with them"--
A Choice Of Sexes
DOWNLOAD
Author : Carol Caine
language : en
Publisher:
Release Date : 1976
A Choice Of Sexes written by Carol Caine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with categories.
Choose The Sex Of Your Baby
DOWNLOAD
Author : Hazel Phillips
language : en
Publisher: Bloomsbury Paperbacks
Release Date : 1998
Choose The Sex Of Your Baby written by Hazel Phillips and has been published by Bloomsbury Paperbacks this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Family & Relationships categories.
This practical guide shows readers a natural method of choosing the sex of a baby. It gives advice on health, diet, sperm count and ovulation in an easy-to-follow manner. The testimonies of numerous parents throughout the world reflects the success of the author's method.
Choose The Sex Of Your Baby Naturally
DOWNLOAD
Author : Norwich, Marni
language : en
Publisher:
Release Date : 2001
Choose The Sex Of Your Baby Naturally written by Norwich, Marni and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Conception categories.
Similar to the famed Shettles book, this is a more comprehensive guide to naturally influencing the sex of your child prior to conception.
Sexual Selection
DOWNLOAD
Author : Malte Andersson
language : en
Publisher: Princeton University Press
Release Date : 1994-06-16
Sexual Selection written by Malte Andersson and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-06-16 with Family & Relationships categories.
Bright colors, enlarged fins, feather plumes, song, horns, antlers, and tusks are often highly sex dimorphic. Why have males in many animals evolved more conspicuous ornaments, signals, and weapons than females? How can such traits evolve although they may reduce male survival? Such questions prompted Darwin's perhaps most scientifically controversial idea--the theory of sexual selection. It still challenges researchers today as they try to understand how competition for mates can favor the variety of sex-dimorphic traits. Reviewing theoretical and empirical work in this very active field, Malte Andersson, a leading contributor himself, provides a major up-to-date synthesis of sexual selection. The author describes the theory and its recent development; examines models, methods, and empirical tests; and identifies many unsolved problems. Among the topics discussed are the selection and evolution of mating preferences; relations between sexual selection and speciation; constraints on sexual selection; and sex differences in signals, body size, and weapons. The rapidly growing study of sexual selection in plants is also reviewed. This volume will interest students, teachers, and researchers in behavioral ecology and evolutionary biology.
Son Preference
DOWNLOAD
Author : Navtej K. Purewal
language : en
Publisher: Criminal Practice Series
Release Date : 2016-10
Son Preference written by Navtej K. Purewal and has been published by Criminal Practice Series this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10 with categories.
The preference for male children transcends many societies and cultures, making it an issue of local and global dimensions. While son preference is not a new phenomenon and has existed historically in many parts of Asia, its contemporary expressions illustrate the gendered outcomes of social power relations as they interact and intersect with culture, economy and technologies. Son Preference brings together key debates on the subject of son preference by assessing existing work in the field and providing new insights through primary research. The book covers a broad range of social science discussions and draws upon textual and ethnographic material from India. Son Preference will be useful to students, scholars, activists and anyone interested in the issues surrounding gender inequity, sex selection and skewed sex ratios.
Choosing Unsafe Sex
DOWNLOAD
Author : E. J. Sobo
language : en
Publisher: University of Pennsylvania Press
Release Date : 2010-08-03
Choosing Unsafe Sex written by E. J. Sobo and has been published by University of Pennsylvania Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-08-03 with Medical categories.
Choosing Unsafe Sex focuses on the ways in which condom refusal and beliefs regarding HIV testing reflect women's hopes for their relationships and their desires to preserve status and self-esteem. Many of the inner-city women who participated in Dr. Sobo's research were seriously involved with one man, and they had heavy emotional and social investments in believing or maintaining that their partners were faithful to them. Uninvolved women had similarly heavy investments in their abilities to identify or choose potential partners who were HIV-negative. Women did not see themselves as being at risk for HIV infection, and so they saw no need for condoms. But they did recommend that other women, whom they saw as quite likely to be involved with sexually unfaithful men, use them.
Gender Biased Sex Selection In South Korea India And Vietnam
DOWNLOAD
Author : Laura Rahm
language : en
Publisher: Springer
Release Date : 2019-07-18
Gender Biased Sex Selection In South Korea India And Vietnam written by Laura Rahm and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-07-18 with Social Science categories.
This book provides an in-depth analysis of the influence of public policy on sex selection. Three Asian countries were chosen for the comparative policy analysis, namely South Korea, India and Vietnam that share in common a historical legacy of son preference, high levels of sex imbalances and active policy response to curbing the growing demographic masculinization of their nations. The research based on the data collected from field work in the three countries shows that despite the adoption of very similar anti-sex selection policies the outcomes have been markedly different for each of the three countries. These unexpected diverse outcomes are explained partly by their different historical and cultural contexts, and partly to the different social, political and economic institutions and dynamics. This monograph offers careful and detailed explanations of both within and across country diversities in policy outcomes, pointing to the importance and the limits of cross-national policy learning and adoption, and raising questions about the efficacy of international organizations’ current approaches to global policy and knowledge transfer.