6. Bacteriophages are

A. cells in the blood that eat bacteria
B. a class of bacteria
C. bacterial viruses
D. none of the above

7. Specialized transduction occurs when

A. the bacteriophage incorporates randomly in the bacterial chromosome
B. the bacteriophage never incorporates into the bacterial chromosome
C. the bacteriophage always incorporates at the same position in the bacterial chromosome
D. none of the above

8. PCR is used

A. to diagnose genetic diseases
B. to solve crimes
C. to study gene function
D. all of these

9. To clone into a plasmid vector, both the plasmid and the foreign DNA are cut

A. with the same restriction enzyme and mixed together
B. with different restriction enzyme and mixed together
C. with the combination of enzymes and then seperated
D. with the combination of enzymes and mixed together

10. PCR can be used to amplify a specific fragment of DNA from which of the following?

A. A drop of blood
B. A hair follicle
C. A fragment of skin
D. All of these