Synopsis The book introduces the reader to genetic engineering and explains about genetic modification, biotechniques in improving food properties and genetic recombination. It also describes various crops destroying pests and strategies of pest resistance; herbicide resistance, biological control, chemical control and disease resistance etc. The subject matter both as regards the arrangement of chapters as well as the contents of each chapter has been so graded, proceeding from simple to more difficult topics, that a student may follow the course with great ease and interest.