question_answer 18)

  Which of the following is not required in the preparation of a recombinant DNA molecules? (a) Restriction endonucleases                                    (b) DNA ligase (c) DNA fragment?                                                          (d) E. cols  

Answer:

                  (d) Restriction enzymes and DNA ligases can be used to make a stable recombinant DNA molecule, with DNA fragments that has been spliced together from two different organisms.