"There is a lot of talk these days about genetically modified foods. Opponents of such foods claim that they pose a significant threat, while advocates insist that they are harmless. The extent and credibility of both views are yet to be confirmed.
In order to answer those questions, Charles Auffray invites us first to understand the way genetic characteristics are transmitted. He explains that chemical and physical messengers transmit information concerning such characteristics, thus passing them on from one generation to another. He also clarifies how this transmission process occurs through encryption: noting down the original, and then translating it to create a copy. Some mistakes might occur during one of the two processes, which leads to hereditary flaws. The latter could be positive, making the new generation better and stronger than the previous one, or negative, resulting in what is known as hereditary, or genetic, diseases. This is where science intervenes to rectify the path, or to avoid such mistakes. That is the main core of the science of genetic engineering, which is the subject of this book."