Genetics is coming uncomfortably close to the questions asked by philosophy, theology, and even politics. It deals with issues of fate, of life amd death. If everything is in the genes, what is left of free will? If man is but a glorifed ape, where is the soul? If society is just a mechanisim for ensuring that genes are transmitted, what room is there for good and evil? The Galton Professor of Genetics and Reith Lecturer explores these questions, and talks about what is really In The Blood.