In 2018, an event occurred that caused a wide resonance in the scientific community. Chinese scientist He Jiankui genetically modified the embryos of two twin girls. As a result of this intervention, children were born who were immune to HIV. The most important thing is that this genetic modification can be inherited, which means that we have entered a completely new era - the era of heritable editing of the human genome. Until recently, interfering with human DNA was considered something out of science fiction, but this is already a fait accompli, and we just have to accept it and understand the possible consequences. In this regard, now, more than ever, it is worth starting to understand the processes of genetic modification, and Professor Kiselev’s book will help everyone with this. The author will tell you in detail what genes and genome editing are, how this technology is used in industry and biomedicine, what its prospects are, and will also answer the questions: Is it possible to cure the most dangerous diseases using genome editing? What is the CRISPR/Cas9 system? How ethical is it? intervention in the human genome? What will the biomedicine of the future be like?