Question

in rDNA technology restrictions endonucleases play very important role give in brief role in rDNA technology?

Answer 1

Restriction enzyme, also called restriction endonuclease, a proteinproduced by bacteria that cleavesDNA at specific sites along the molecule. In the bacterial cell, restriction enzymes cleave foreign DNA, thus eliminating infecting organisms. Restriction enzymes can be isolated from bacterial cells and used in the laboratory to manipulate fragments of DNA, such as those that contain genes; for this reason they are indispensible tools of recombinant DNA technology(genetic engineering).