Our molecular biology revives the tale of molecules that make up the basis of life, and reveals its complicated interactions and how to control this wonderful system. The book deals with the historical foundations of this science, starting with the blocks laid by senior scientists such as "Darwin", "Wallace" and "Mendel", reviewing the discovery of the DNA structure in 1953. It is widely reviewed by a group of molecular biology applications at the present time, including benefiting from it in treating diseases, examining crimes, analyzing human history, and producing genetically modified organisms and crops. The book also highlights the progress of our time in developing new drugs and identifying genetic fingerprints. The book provides an interesting and detailed understanding of the history and developments of molecular biology and reveals its modern importance and wide applications in which it can contribute.