Book excerpt: Genes have a huge impact on who we are, from defining us as humans, to governing how we behave. Whether controlling our cells or creating new forms of life, discover how DNA makes each of us unique. In The Secret Life of Genes, you'll learn all about the past, present and future of the human genome. Filled with colourful, graphic illustrations to help you to understand the world of genetics, from the basics to the most complex theories, this book brings the inner workings of the human body to life. Derek Harvey answers the biggest questions, from the nature of inheritance, evolution and reproduction, to how genes are arranged and how DNA is read. Take a trip through the history of the world's DNA and unlock the future of the field.