Genes are the building blocks of heredity. Human genetics is a rapidly evolving field in medical science. This book presents an overview on recent developments in some of the genetic diseases. It discusses various genetic disorders, dealing with epidemiology, etiology, molecular basis and new treatment measures for these diseases. Experts from different countries in Europe, Asia, and America have contributed in the compilation of this book. The content serves readers with different and valuable content, offering a welcome personalized overview on various subjects. This book does not provide a strictly systematic view of human genetic disorders. However, it is a valuable reference for medical practitioners, researchers, biologists and students in various fields of medical science.