What is the main conflict in The Selfish Gene by Richard Dawkins?

According to the introduction to this book, "The Selfish Gene" changes the way that many scientists look at the process of natural selection. The author begins by suggesting that intelligent, thinking animals must ask questions about its origins, and that Darwin has supplied excellent answers. However, Darwin's thoughts have been misinterpreted over the years to suggest that animals work together to preserve their own species. This book will challenge that idea.