[clip] The female when she comes of age wanders off to live with the
> neighboring troop and thus avoids mating with brothers and sisters.
>
> Jerry Monaco
>
>
>
I wanted to add something here. While I was writing this post I remembered a paper that I read a few years back. The paper is by Jim Moore, an anthropologist at Harvard and USCD. It is called Female transfer in primates, The paper was originally written in 1984, and published *Int. J. Primatol. *5: 537-589. I think it might have been revised. It is currently available here http://weber.ucsd.edu/~jmoore/publications/Femdelta.html
What interests me in the context of this thread is the first paragraph of the conclusion
"If, as argued above, FT [Female Transfer] and NFT [non-Female Transfer] species differ significantly in the kinship structure of social units, we should expect systematic behavioral differences between the two clusters of species. Failure to detect them would imply that either our descriptions of behavior have not adequately distinguished the nepotism we assume is present among relatives from the competition we assume must be prevalent among nonrelatives, or many behaviors we have labelled "nepotistic" in macaques and baboons actually represent a simple preference for the familiar and predictable, regardless of degrees of relatedness (preference for the familiar: Marler 1976, Kummer 1978; see also Washburn and Hamburg (1965), Bernstein and Gordon (1974), Green and Marler (1979), and especially Myers (1983))."
Notice that the author (an anthropologist) simply assumes that primates exhibit something that is called a "kinship structure" and that kinship structure is significant to studying the sociality of primates, and understanding their social units. To dogmatically say that kinship relations and kinship structure is exclusively human not only eliminates the continuity between our species and our ancestor and cousin species, but also takes away a useful tool for primate studies, and useful comparisons between human social groups and primate social groups. To eliminate the concept of kinship structure from primate studies, by definition, by saying the conceptis only applicable if you can show that there is some representation of "dead kin" in the kinship structure, is merely a form of dogmatism. I can only guess that the reason for this dogmatic definition is to emphasize human exceptionalism. Nobody doubts that among existing species humans are exceptional in many ways. But that exceptionalism is not as great as we would like to think, with our pre-Darwinian mind set.
Jerry Monaco