Genomics is a new discipline that is revolutionizing the way biological and medical research is done. The human genome is almost completely sequenced, which will help to accelerate research and development in Genomics even more. The chapters in this book try to capture the rapidly evolving field. Overviews of nucleic acid technologies, proteomics and bioinformatics are followed by chapters on applications, including human health, agriculture and comparative genomics. The book also includes two chapters on legal and ethical issues of Genomics, a topic that is becoming more and more important.