The Double-Edged Helix explores the impact of recent genetic discoveries on both different population segments and society as a whole. The authors address the medical and ethical implications of the new technologies, outlining potential positive and negative effects of genetic research on minorities, individuals with disabilities, and those of diverse sexual orientations. Presenting a wide array of perspectives, this book emphasizes the need to ensure that research into genetics research does not result in discrimination against people on the basis of their DNA.

As prenatal tests proliferate, the medical and broader communities perceive that such testing is a logical extension of good prenatal care--it helps parents have healthy babies. But prenatal tests have been criticized by the disability rights community, which contends that advances in science should be directed at improving their lives, not preventing them. Used primarily to decide to abort a fetus that would have been born with mental or physical impairments, prenatal tests arguably reinforce discrimination against and misconceptions about people with disabilities.

In these essays,...