The evidence from evolution seems overwhelming that women have evolved a diversity of sexual strategies, all with the aim of getting the 'best' sperm based upon her position within the tribe.
Rather than being derogatory to women, this research shows how diverse, intelligent and complex women's sexual behavior is. And educating us to creative ways to cultivate these evolved instincts and behaviors (in nice moral ways!).
While this may be a monogamous coupled relationship, as the research below shows, it is clear that there are many other strategies available to a woman as well.
* The shape of the penis causes it to act as sperm pump.
* Semen coagulation, and natural spermicide properties (to kill other male's sperm).
* Seminal fluid buffers acidity of vagina, creating more viable conditions for sperm.
* Benefits of multiple sex partners for sharing of diseases (and hormone function).
* Paternity confusion (children evolved to look more like their mothers, less chance of infanticide, males provide more help & food for raising young).
* Women can have multiple orgasms (unlike men).
* The woman's vagina is lubricated only at the beginning of sex - seminal fluid also acts as a lubricant.
* Many animal species, including primates are promiscuous.
* vaginal contractions pull up sperm to cervix
* longer periods of coitus (needed to make woman orgasm, more effective sperm displacement)
All in all the evidence is conclusive. Females have evolved to be promiscuous as one common strategy in their ancestry. And this diversity of behaviour is also shared by the males, creating a wonderfully rich and complex tapestry of sexual behaviours and strategies.
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