Restriction enzymes
A)produce staggered cuts in DNA that are often useful in splicing genes.
B)are very specific in their action.
C)are natural defense mechanisms in bacteria that destroy foreign DNA introduced by viruses.
D)are used along with ligases and plasmids to produce DNA libraries.
E)are all of these.

Question

Quizplus · Accepted Answer

Restriction enzymes are enzymes that cut DNA at specific recognition sequences. They often produce staggered cuts that can be useful in splicing genes or joining DNA fragments together. They are very specific in their action, recognizing and cutting at precise sequences in DNA. They are natural defense mechanisms in bacteria that destroy foreign DNA, such as that introduced by viruses. They are also frequently used in biotechnology, along with ligases and plasmids, to produce DNA libraries and manipulate DNA sequences. Therefore, all of the choices are correct.

Restriction Enzymes