Biotechnology as a fast developing technology as well as a science has already given its impact in different aspects of day-today human life such as public health, pharmaceuticals, food and agriculture,industry,bioenergetics and information technology ,Now it is very clear that biotechnology will be a key technology for the 21st century or the science of feature. It has the potential to ensure food security, dramatically reduce hunger and malnutrition, and reduce rural poverty particularly in the developing countries like India. Considering its commercial potential and its possible impact on the economy, government of India has taken a number of measures to build up trained human resource in biotechnology and promote research and development and its commercial aspects in the country. The introduction of biotechnology as a subject discipline in colleges by various universities is such an initiation to bring the subject to the basic level and make the students aware of the subject, its techniques and its socio political and ethical considerations. This textbook covers all the fundamental aspects of Biotechnology. It has been written in a very simple manner.

Dr. N. Elangovan is working as Assistant professor in the Department of Biotechnology, Periyar University. Totally 18 years of research experience in Biological Sciences and 7 years of teaching experience handling in Postgraduate, M.Phil. Students and He has published good number of articles .