Choosing Sexes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Choosing Sexes write by Kristen J. Navara. This book was released on 2018-02-01. Choosing Sexes available in PDF, EPUB and Kindle. 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.
Choosing Unsafe Sex
Choosing Unsafe Sex - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Choosing Unsafe Sex write by Elisa Janine Sobo. This book was released on 1995. Choosing Unsafe Sex available in PDF, EPUB and Kindle. 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. It also discusses the related issue of seropositivity concealment or non-disclosure. 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. In either case, women sought to present and to view themselves as wise and their men as monogamous. 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 use them; they saw other women as quite likely to be involved with sexually unfaithful men. Choosing Unsafe Sex includes recommendations for educational strategies that are sensitive to cultural expectations for relationships. Dr. Sobo's findings have significance not only for inner-city HIV/AIDS educators but for all who seek a deeper understanding of mainstream assumptions about heterosexual relationships.
How to Choose the Sex of Your Baby
How to Choose the Sex of Your Baby - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook How to Choose the Sex of Your Baby write by Landrum B. Shettles. This book was released on 2006-10-10. How to Choose the Sex of Your Baby available in PDF, EPUB and Kindle. For almost forty years, How to Choose the Sex of Your Baby has been the standard reference for couples trying to increase their chances of having the son or daughter they hope for. In this new edition of their classic book, Dr. Shettles and David Rorvik provide authoritative scientific studies and compelling anecdotal evidence demonstrating that the Shettles method continues to produce results unmatched by any other method. Dozens of testimonials confirm its ease of use and rate of success. How to Choose the Sex of Your Baby explains the simple, at-home, noninvasive Shettles method and presents detailed steps to take to conceive a child of a specific gender. The properly applied Shettles method gives couples a 75 percent or better chance of having a child of the desired sex. Some researchers have reported success rates of up to 90 percent!
Your Baby's Sex: Now You Can Choose
Your Baby's Sex: Now You Can Choose - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Your Baby's Sex: Now You Can Choose write by David M. Rorvik. This book was released on 1971. Your Baby's Sex: Now You Can Choose available in PDF, EPUB and Kindle.
Choosing Unsafe Sex
Choosing Unsafe Sex - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Choosing Unsafe Sex write by E. J. Sobo. This book was released on 2010-08-03. Choosing Unsafe Sex available in PDF, EPUB and Kindle. 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.
