In today's world, responsible biocitizenship has become a new way of belonging in society. Individuals are expected to make "responsible" medical choices, including the decision to be screened for genetic disease. Paradoxically, we have even come to see ourselves as having the right to be responsible vis-a-vis the proactive mitigation of genetic risk. At the same time, the concept of genetic disease has become a new and powerful way of defining the boundaries between human groups. Tay-Sachs, an autosomal recessive disorder, is a case in point--with origins in the period of Eastern...

In today's world, responsible biocitizenship has become a new way of belonging in society. Individuals are expected to make "responsible" medical choices, including the decision to be screened for genetic disease. Paradoxically, we have even come to see ourselves as having the right to be responsible vis-a-vis the proactive mitigation of genetic risk. At the same time, the concept of genetic disease has become a new and powerful way of defining the boundaries between human groups. Tay-Sachs, an autosomal recessive disorder, is a case in point--with origins in the period of Eastern...