With implications that go to the core of what it means to be human, the issues raised by genetic manipulation-especially cloning-have sparked a passionate debate among governmental, religious, and scientific quarters, as well as the media and the general public. Keeping to the actual science rather than speculation is of the utmost importance for an enlightened approach to this weighty discussion. In clear, lively prose, The Science and Ethics of Engineering the Human Germ Line: Mendel's Maze...