The expression of the Gadd45g gene is essential in the determination of sex, fertility and development of testicles, as shown by an investigation led by the Higher Council for Scientific Research (CSIC). The work, published in the journal PLOS ONE, reveals that blocking this gene prevents the development of testes and causes the growth of female sexual organs, regardless of the presence of the Y chromosome.
As a study carried out by evolutionary biologists at the Australian National University has just shown, heterosexual women are more sexually attracted to men with large penises. Details are published in the journal 'Proceedings of the National Academy of Sciences' (PNAS).
"I like being spanked. Getting tied up is fun." Rihanna, the famous pop singer, confessed in 2011 to Rolling Stone magazine that she believed she was a bit of a masochist. However, these statements today no longer impact as much as those of Leopold von Sacher-Masoch did in 1780 in his work "The Venus of the Skins."
According to a study published today in the New England Journal of Medicine, it is more myth than reality. The only work that so far has scientifically measured the energy expenditure of having sex revealed that in a sexual encounter lasting about six minutes.
Couples who establish a traditional division of household chores have more sex than those who distribute all household chores equally, according to the University of Washington (USA).
Scientists from the Universities of Tennessee and Mississippi have asked this question and have concluded that "the first time we have a sexual relationship determines what the rest of our sexual life is like." The details of the study are published in the specialized journal 'Journal of Sex and Marital Therapy'.
At the Atapuerca Foundation (Burgos) "Sex in Stone" has just been inaugurated, an original exhibition that shows the sexual behaviors of the Upper Paleolithic.
Are there differences in the brain of a man who feels like a woman, or in that of a woman who feels like a man? To answer this question, researchers from the National Distance Education University (UNED), in collaboration with other centers, have measured the thickness of the cerebral cortex of transsexual people. The results confirm the biological roots of transsexuality.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
