Genetic engineering, also known as genetic modification, is a highly complicated and advanced branch of science. This book provides an insight into various matters related to genetic engineering of microorganisms, plants and animals. It particularly includes natural and social sciences. In context of natural science, this book covers topics ranging from the genetic engineering of microorganisms to production of antibiotics, the gene focusing and transformation in plants, the era of marker-free plants in answer to biosafety issues, and also the generation of transgenic animals and those made by cloning are covered. In context of social science, it discusses the problems related to ethics and morals in biotechnology and the role of media in reporting around the cloned sheep, Dolly.