Define recombinant DNA technology.What is the function of restriction enzymes?

What is the function of digestive enzymes?

Name the four tools for accomplishing the tasks of recombinant DNA technology. Also mention the function of each tools.

Name the compound used for staining DNA to be used in Recombinant Technology. What is the color of such stained DNA?

Define restriction site.

How nomenclature of restriction enzyme is done ?