1/2. In 1909 a young Harvard scientist created a strain of genetically identical mice to study the inheritance of their coat colour. Nearly a century later the descendants of Clarence Cook Little 's mice have been responsible for more than 20 Nobel Prizes and key insights into our understanding of modern medicine. In the first of two programmes Graham
Easton traces the scientific career of the mouse and finds outwhy it has been so important in our understanding of human biology and disease. Producer Pamela Rutherford