An explanation of molecular genetics, aimed at level one and two students, with an introduction to the next level. It includes chapter objectives and self-assessment questions. Key words are illustrated throughout the text and there are further reading suggestions. The volume is part of the "Biomedical Sciences Explained" series, designed to meet the needs of undergraduates studying biomedical sciences. Each volume provides a core of knowledge from which the student can then go on to more advanced study in their chosen subject.