Functional genomics is a field of molecular biology that allows the exploration of genes, interactions and protein functions on a universal level. This book highlights important matters in the branch of functional genomics, ranging from evaluation of the genetic codes, to understanding of the role of varied genes and proteomic ramifications. This book gives a perspective on primary problems and latest progresses in science and technology in the field of genomics medicine. Due to the vastness of the subject of functional genomics and further important sub-divisions like its applications, it is not possible to cover it all in one single book. Therefore, this book provides a short preface to various topics, dealing mainly with their relation to functional genomics and stresses on its particular uses in bio-medicine, agro-food technologies and zootechniques.