And so what happens is if we take a special enzyme known as DNA ligase that is able to reform these bonds between this section and this section and between this section and this section, then if we add this DNA lie gaze into the mixture. What happens is this entire section will be placed onto this complementary section. And this entire section will be placed onto this complementary section. And so at the end, we're going to form this single molecule, single DNA molecule, that is a recombinant DNA molecule. It will consist of these individual DNA molecules that ultimately came from two different sources. So what scientists realized is once they actually discovered restriction enzymes, they then realized that they can use these restriction enzymes to basically form any recombinant DNA molecule that they actually want.