It is further suggested that no extant theory on the female psyche or motivation hierarchy would predict that early father presence with his daughter would deter later promiscuity on her part, but that such a theory or model would be desirable. Geneticists in the last decade have formulated a view of the animal kingdom that describes what they call altruism an inverse function of the genetic distance between the interacting individuals or species. That is to say, individuals are indifferent or hostile to others in proportion to their genetic unlikeness. Ipsoc Macquire Homo sapiens is a separate species and thus, by definition, is unique. In addition to their singularity by achieving the rank of species, humans possess an oddity which is rare in the biota and virtually idiosyncratic in large, terrestrial primates.
Humans have social fathers.
Across the world's community of cultures, men marry. Once married, the overwhelming majority of the husbands become fathers. Any rare exception to this trend receives much publicity and analysis. The adult males will certainly challenge predators that would threaten the troop's young. No adult male primate, other than men, does this.