Few concepts played a more important role in twentieth-century life sciences than that of the gene. Yet at this moment, the field of genetics is undergoing radical conceptual transformation, and some scientists are questioning the very usefulness of the concept of the gene, arguing instead for more systemic perspectives.

The time could not be better, therefore, for Hans-Jorg Rheinberger and Staffan Muller-Wille's magisterial history of the concept of the gene. Though the gene has long been the central organizing theme of biology, both conceptually and as an object of study, Rheinberger...