*This project was funded by the Social Sciences and Humanities Research Council of Canada (SSHRC awards nos. 752-94-1693, 756–2001-0009) and the Associated Medical Services, Inc. through the Hannah Institute for the History of Medicine Program. I want to thank the editors and three anonymous reviewers of the CRSA for their critical comments and feedback on the manuscript. An earlier version of the paper has been presented at the Genes and Society session at the 2005 Canadian Sociology and Anthropology Association in London, Ontario. The manuscript was first submitted in November 2005, resubmitted in revised form in August 2006, and accepted in December 2006. Contact: email@example.com.