In other words, homosexual men have more older brothers, on average, than do heterosexual men. The number of younger brothers has no consistent effect; neither older nor younger sisters has any consistent effect; and there does not appear to be any association between female homosexuality and ...
The relative toxicity of each pair of suspensions was found in dipping or measured-drop tests on as many as possible of the species Oryzaephilus surinamennsis L., Tribolium castaneum Herbst and Tenebrio molitor L. In addition, some tests were made by injection of colloidal suspensions. In ...
Homosexuality is a common occurrence in humans and other species, yet its genetic and evolutionary basis is poorly understood. Here, we formulate and study a series of simple mathematical models for the purpose of predicting empirical patterns that can be used to determine the form of selection ...
When parent-offspring relations in sexually reproducing species are viewed from the standpoint of the offspring as well as the parent, conflict is seen to ... LT L. Trivers - 《Current Biology Cb》 被引量: 847发表: 1974年 Sexual Selection and Reproductive Competition in Insects This publication...
Also, beginning in the late 20th cent., biologists more openly examined and discussed the occurrence of homosexual behaviors among animals, which has been documented in several hundred species. Such behaviors, which may include courtship, sexual contact, bond formation, and the rearing of young, ...
And it is that nihilism that pervades the current understanding of sex and results in the demand for equality among forms of erotic expression. Other: Homosexuality is associated with various physical and behavioral disorders from AIDS to predation and suicide. The close association confirms the ...
Homosexuality in its myriad forms has been scientifically documented in more than 450 species of mammals, birds, reptiles, insects, and other animals world... B Bagemihl - 《Language》 被引量: 535发表: 1999年 加载更多研究点推荐 homosexuality 站内活动 ...
“American Dream”.Homosexualityis a complicated aspect of our natural world, and there are many factors that can cause a human as well as many other species to become homosexual, some which are choices, but research has proven thatsexual orientationis genetic and that there are only a slim ...
But in reviewing research on some 110speciesof male insects and spiders, the researchers found that the available evidence weakly supports such adaptive theories. In general there is no clear benefit to homosexual behavior in insects. The costs, on the other hand, can be considerable. Homosexual ...
All human beings have equal worth and therefore straight or homosexual, everyone has the right to live with human dignity. I am all for ‘equal human rights’ for homosexuals, and to not treat them like some inferior species or second-class citizens. They are as much human as anyone and ...