Genome represents the latest development in biological sciences, as it transformed the research approach in multiple fields such as epidemics, medicine, evolutionary biology and criminal evidence. The force of determining the complete genetic composition of living organisms comes with a fundamental change in the ways in which researchers in life sciences are explored and the questions that can be asked about them. The author highlights in this book from the series "Scientific Views" on the genome science and its various tools that expand quickly. It indicates that determining the human genome sequence has become only a few days at a low cost, and it shows how these techniques can be used to improve our understanding of our biological system and its effect on health and disease. The author predicts that genome on the doorstep of a huge leap will deeply affect science and society.