Genetic engineering is one of the most mysterious, and therefore interesting sciences of our time. Did you know that there are already such developments that can turn upside down the very concepts of flora and fauna? Do you believe that the notorious biorobot is not a science fiction character, but the same reality as a personal computer? The population is growing day by day, but everyone needs to be fed. Old, well-studied and therefore easily treatable diseases are being replaced by new, still terrible ones, such as AIDS. Oncology also does not allow you to relax: there are more and more cancer patients day by day, medicine is often unable to provide them with real help... Have you ever wondered how many families break up due to the fact that people cannot have a child on their own?! Nikolai Dyagterev in his new book tells readers about genetic engineering in a simple and understandable language and reveals some secrets of this most interesting field of science.