This textbook provides a clear and comprehensive introduction to the importance of genetic studies in conservation. The text is presented in an easy-to-follow format with main points and terms clearly highlighted. Each chapter concludes with a concise summary, which together with worked examples, problems and answers, emphasize the key principles covered. Text boxes containing interesting case studies and other additional information enrich the content throughout. Over 100 beautiful pen and ink portraits of endangered species help bring the material to life.