Genetics and its mysterious little sister, epigenetics, have deep roots in the history of biology. Today, epigenetics is of paramount importance in not only the fundamental sciences, but also in life science applications, ranging from molecular biology, and disease diagnosis and treatment, to agriculture. Epigenetics in Ecology and Evolution traces the history of the concept of epigenetics in biology and describes the molecular mechanisms concerned. It examines the contributions that the emerging discipline of epigenetics has made to the fields of ecology and evolution, regarding both plant and animal organisms, as well as its place in our society. By exploring the importance of epigenetics at varying levels, from the cell to the organism as a whole, and even to the ecosystem, this book offers answers that are accessible to a wide audience, from scientifically curious citizens to students and professionals working in the world of biology. The aim is to enable everyone to acquire or develop a critical and informed perspective on the complex relationships between genetics and epigenetics.