Molecular Biology is written to strengthen the links between molecular biology, genetics, and biochemistry. The content is related to the composition, structure, and interaction of the various cellular molecules. A direct approach has been taken to clarify the importance of genes and preservation of the main code- the basis of every evolution since the beginning of the world. The book encompasses in-depth information about vital processing in organisms, starting from scratch and leading to the final arenas of genetic engineering, the formation of new biotechnologies, new feature complexes for treatment and cures for various disorders. Thus, it aims to cover the whole theory of molecular biology.