Monogamy sexual selection.



monogamy sexual selection

Generally, these males do not give their mates so much absolute fidelity as devotion

monogamy sexual selection

One exaggerated female secondary sex characteristic is large breasts.

monogamy sexual selection

Chapter VIII.

monogamy sexual selection

Accordingly he says more manifestly:

monogamy sexual selection

What can increase HIV risk?

monogamy sexual selection

Chapter IV.

monogamy sexual selection

Wikipedia website.

monogamy sexual selection

There have been, too, who preferred to die for their husbands rather than marry after their husbands' death.

monogamy sexual selection

It's too grim.

monogamy sexual selection

These alone are generally enough to give rise to at least mild sexual fantasization.



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The presumption goes that human mothers need long-term, dependable partnership to help them carry big-brained, dependent children across the hazardous, exhausting stretch from embryo to maturity.



While "good" men who have bonded to their wives can love old young gay sex free and continue to find them arousing until senescence — and "age-ism" can, indeed, be ameliorated by good upbringing and consciousness-raising — it is nevertheless almost certainly wired-in for the outward emblems of fecundity — youth and health — to be arousing to men.



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Reproductive advantage apparently goes to the male who produces enough to overwhelm his rivals' contributions.



Non-natal not having been born to one or both of the breeding individuals within a group; an immigrant from a neighboring group.