Answer: The restriction enzymes have the property of cleaving DNA molecules at a specific sequences. This restriction enzymes are used to cut DNA sequences at specific points of nucleotides. Some foreign genes are inserted into plasmids to make recombinant DNA.
Explanation: When cloning by restriction digest and ligation, you use restriction enzymes to cut open a plasmid (backbone) and insert a linear fragment of DNA (insert) that has been cut by compatible restriction enzymes. Overview of the restriction cloning process
hope this helps you