Gene therapy can be used to introduce foreign DNA into cells ________. a. for molecular cloning b. by PCR c. of tissues to cure inheritable disease d. all of the above

Why would a scientist wish to induce mutations?   a. to increase the number of mutated phenotypes   b. to create mutations in specific genes   c. to test for carcinogen activity   d. to create tumors for cancer research   e. because she was crazier than a mutated bedbug

Which type of gene therapy involves the direct administration of viruses in patients' tissues?   a. in vitro gene therapy   b. in vivo gene therapy   c. ex vitro gene therapy   d. ex vivo gene therapy

Defects in the excision  repair process may result in : A. Mutations B. Okazaki fragments C. Excess DNA polymerase activity D. Shortened telomeres