Reviews 'I enjoyed reading this chapter with its wonderful analogies...The author is gifted in writing in such a way that the reader will understand difficult concepts.' - Helena Kuivaniemi, Center for Molecular Medicine and Genetics, Wayne State University, USA Description Uses established principles of genetics as methods to analyze larger problems in biology, so beginning where most genetics books leave off. Illustrates the concept of key analytical tools with carefully selected examples from a range of model organisms, and encourages the reader to look beyond the examples to see how these tools apply to a wide range of biological problems. Text boxes and extended case studies take coverage to a new level, allowing the reader to really get to grips with how we use genetic tools to understand biological systems. The latest, most powerful tools are covered for the first time in a textbook, giving insights into the exploration of gene networks and gene interactions. Full colour art complements the lively, engaging text to help the reader grasp the concepts being discussed. The Online Resource Centre features additional materials for both instructors and students, adding to the value of the text as a teaching and learning tool. How can we explore gene expression in time and space? How do we know what role a particular gene has? How do some genes control the expression of others? How do genes interact to form gene networks? Advanced G