The purpose of this book is to inform readers about the fundamentals of genetics and its applications in modern practice. Readers will gain an understanding of the principles of genetics and its capabilities, as well as genetic testing and its effectiveness. Additionally, through this book, readers will explore genetic practices and their significance to human health, as well as the ethical issues related to genetic testing and research. This will help them comprehend genetic information whether seen in news reports or provided by healthcare professionals, utilizing the natural resources available for diagnosing and treating genetic diseases, and understanding the impact and applications of genetic information. In the field of genetic research, the book discusses cloning as an important process in addressing human diseases, where gene cloning allows scientists to create and develop targeted tools used in gene therapy. The book indicates that types of cloning, such as gene cloning, are vital for success in genetic research and analyses, as it could lead to discovering effective treatments for diseases, whatever they may be. Regarding applications, the book explains how gene cloning provides a safe source of proteins used in treating diseases, as supplying patients with proteins they lack due to mutations in their genes can alleviate symptoms of many genetic disorders. Consequently, some cloned proteins, such as human growth hormone and insulin, have been successfully used to treat issues like dwarfism and diabetes. Publishing house: Arab Scientific Publishers/Lebanon Number of Pages: 270 Year of publication: 2003