The Genetic Strand is the story of a writer's investigation, using DNA science, into the tale of his family's origins. National Book Award winner Edward Ball has turned his probing gaze on the microcosm of the human genome, and not just any human genome -- that of his slave-holding ancestors. What is the legacy of such a family history, and can DNA say something about it? In 2000, after a decade in New York City, Ball bought a house in Charleston,...