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(d) expression of antibiotic resistance gene. is a broad area of science involving multiple disciplines designed to use living organisms or their products to perform valuable industrial or manufacturing processes or applications pertaining to human benefit. Answer: Which of the following is not required in the preparation of a recombinant DNA molecule ? Answer: (d) Hindll (c) Taq polymerase Answer: (b) endonucleases Check the below NCERT MCQ Questions for Class 12 Biology Chapter 11 Biotechnology: Principles and Processes with Answers Pdf free download. (c) charge to size ratio (d) all of the above. (b) two sticky ends will be produced Chapter 11: Biotechnology Principles Processes Important Questions for Class 12 Biology Chapter 11 - Biotechnology: Principles and Processes. 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