Living near Boston and working in Cambridge, I have a fair number of friends and acquaintances who are research scientists and engineers. At times, when I’ve encountered a novel set in this world, I’ve been tempted to recommend it to these friends. But I usually have second thoughts, since “science” in contemporary fiction usually serves as set dressing or as metaphor. With Andrea Rothman’s debut, THE DNA OF YOU AND ME, I have no such hesitations.