5 Words, 1 Chapter

The Selfish Gene can be defined by certain keywords. Keywords that can lead us to understand what each chapter is talking about. In the second chapter The Replicators, key words and phrases such as: accuracy, efficiency, longevity and complex entities are the main points and ideas that it talks about.
The first three are the reasons why certain types of replicator molecules survive among a pool of different types. The phrase "Complex entities" on the other hand describes the replicators themselves, and how evolution and biological molecules go from being simple and lonely, to creating something of great complexity, like the human body. All living organisms are made up of molecules, and one of the most important molecules are the replicators. Complex entities that thanks to their efficiency, longevity and accuracy, are the survivors and the fittest.