This is a revised edition with a new afterword by Daniel Dennett. The Extended Phenotype carries on from where The Selfish Gene takes off. It is a fascinating look at the evolution of life and natural selection. Dawkins s theory is that individual organisms are replicators that have extended phenotypic effects on society and the world at large, thus our genes have the ability to manipulate other individuals. A worldwide bestseller, this book has become a classic in popular science writing.