what is the definition of kinship diagram

rmbs123...

A kinship diagram is a tool used in anthropology and genealogy
to graphically represent the kinship or relationship between
members of a family and families in a community.

A sample of such a diagram is on a page of Lyn Walter's site
at the Univerity of Wisconsin at Green Bay:
http://www.uwgb.edu/walterl/kinship/diagram.htm

An explanation of the symbols and letters used with such a
diagram in on this page of her site:
http://www.uwgb.edu/walterl/kinship/symbols.htm

Further explanation of kinship diagramming and symbols is 
available in a series of images beginning on this page of
Lyn's site:
http://www.umanitoba.ca/faculties/arts/anthropology/tutor/image_list/1.html

And the entire tutorial on kinship, from which these diagrams
are taken, begins on this page of her site:
http://www.umanitoba.ca/faculties/arts/anthropology/tutor/kinmenu.html


An example of a complex kinship diagram actually used
in an anthropological study can be seen on the site of
the Anthropological Department at the University of 
California at Santa Barbara, on this page from the 
Axfight project, which documents the relationships
between the participants in an actual axfight between
Yanomamo Indians in the South American Amazon:
http://www.anth.ucsb.edu/projects/axfight/complin.html


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Very informative, detailed answer.