This course aims at an audience with basic competences in molecular biology and genetics. It will serve as a reminder as well as extension course for those intending to major in all disciplines in biology. The class starts with an overview over the features of DNA as the carrier of genetic information in cells and the mechanisms by which it is maintained over cell generations. Further, it addresses the fundamental mechanisms by which the information encoded in DNA is transcribed into RNA and then translated into proteins as functional units. Basic concepts of eukaryote genetics such as chromosome function and Mendelian heredity will be covered as well as aspects of bacterial genetics relevant for experimental molecular biology.