Restriction Endonucleases Are Useful in Gene Cloning Because

Multiple Choice

Restriction endonucleases are useful in gene cloning because:

A) they can cut DNA at specific sequences.
B) they can join DNA molecules that have been cut at specific sequences.
C) they all make cohesive ends when they cut DNA.
D) they all make 5' phosphate extensions and recessed 3' OH groups that can be rejoined by DNA ligase.
E) they can both cut and rejoin DNA molecules.