A Textbook on Biotechnology presents an integrated study of biology, cell biology, chemistry and computer science and illustrates how biotechnology can be used to develop treatment for diseases and also beneficially alter genetics of humans and other life forms. Biotechnology is a field of applied biology which involves the use of living organisms and bioprocesses in engineering, technology, medicine and other fields which require byproducts. The book covers diverse topics ranging from molecular biology, tissue culture, agricultural engineering, genetics, gene therapy, drug design, genome, probiotics and genetic engineering for animals, plants, microorganisms, bioinformatics and medicine. Designed as a comprehensive textbook for undergraduate students of Biotechnology, this comprehensive and lucidly written text will also be useful for Civil Services and other competitive examinations