Use Figure 20.1 to answer the following question.

Figure 20.1
-Which enzyme was used to produce the molecule in Figure 20.1?
A) ligase
B) transcriptase
C) a restriction enzyme
D) RNA polymerase
E) DNA polymerase

Question

Use Figure 20.1 to answer the following question.
  
Figure 20.1
-Which enzyme was used to produce the molecule in Figure 20.1?
A) ligase 
B) transcriptase 
C) a restriction enzyme 
D) RNA polymerase 
E) DNA polymerase

Quizplus · Accepted Answer

The molecule shown in Figure 20.1 is a recombinant DNA molecule, which means that it was made by combining DNA fragments from different sources. The most common way to do this is by using a restriction enzyme to cut the DNA at specific sites, and then using DNA ligase to join the fragments together. Therefore, choice C, a restriction enzyme, is the correct answer. The other options, transcriptase, RNA polymerase, and DNA polymerase, are all enzymes involved in nucleic acid synthesis or transcription, but they are not used in the production of recombinant DNA.

Use Figure 20.1 to Answer the Following Question