Human Sexual Behavior
The sexy son hypothesis has also been put forward as the origin of some aspects of human sexual behavior. In particular, it has been shown that human females are more attracted to men of higher physical attractiveness, and to men whose physical features are indicative of a higher exposure to testosterone during key developmental periods, during the most fertile times of their menstrual cycles, and more attracted to relatively feminine men ("dads") during the remainder of the cycle. However, the methodology of these claims is disputed. These observations have led to the conclusion that infidelity is a natural occurrence in females, and evolutionarily advantageous, on the grounds that it will enable them to secure both the best genes and the best caregiver for their offspring.
Read more about this topic: Sexy Son Hypothesis
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