Which of the following can act as molecular scissors?
Which of the following can act as molecular scissors?
RNA polymerase
DNA polymerase
Restriction enzymes
DNA ligase
Solution
Option (3) is the correct answer because the cutting of DNA at specific location became possible with the use of restriction enzymes. So, they are also called molecular scissors.
The DNA fragments can be joined together by using DNA ligase. They are called molecular glue.
DNA polymerase helps in the extension step of PCR.