نتایج جستجو برای: sex factors
تعداد نتایج: 1236437 فیلتر نتایج به سال:
Jennions et al. introduce the different kinds of sex ratio and their biology.
Are there other ways of explaining these behaviours? Spiteful behaviours have sometimes also been interpreted as a form of altruism or indirect altruism. Mutually harmful behaviours are favoured if they result in a benefit for some third party that is sufficiently related to the actor. Here, there is no requirement for negative relatedness to one’s victims, and so a distinction has been made be...
included a review of some notable empirical evidence, analyzed and related in a wellthought out epidemiologic fashion. While the text is necessarily complex in parts, its appeal should not be limited; there is something in it to interest everyone. Perhaps a more rational and less zealous attitude concerning the use of marijuana, and its impact on us all, will accompany a widespread reading of t...
The ratio of males to females in a population is known to influence the behaviour, life histories and demography of animals. A recent experimental study finds that sex ratio also affects human economic behaviour, and in a manner consistent with evolutionary theory.
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