?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=No+evolution+without+genetic+variation&rft.creator=Crusio%2C+Wim+E.&rft.subject=Sociobiology&rft.description=Dr.+Thornhill's+target+article+presents+us+with+a+number+of+hypotheses+concerning+rules+regulating+inbreeding+in+man.+It+is+argued+that+the+goal+of+such+rules+is+not+primarily+the+avoidance+of+close-kin+inbreeding%2C+because+'selection+for+the+avoidance+of+close-kin+mating+has+apparently+resulted+in+a+psychological+mechanism+which+promotes+voluntary+incest+avoidance'.&rft.date=1991&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F167%2F1%2Fbbsthorn.htm&rft.identifier=++Crusio%2C+Wim+E.++(1991)+No+evolution+without+genetic+variation.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F167%2F