Human Genome Blueprint to New Medicine     In Washington, D.C. yesterday, two teams of scientists announced they have developed a working draft of the human genome, a rough blueprint for human life. A human genome is the biological instruction for how an individual is formed and how the cells in the body function. Researchers say decoding the genome, also known as genes or DNA, will the prevention, detection and treatment of disease. In fact, some drug companies have already started developing medicines based on the action of genes.