And these restriction enzymes basically cleave at position one and position two. So we basically produce these two fragments that differ by size. And because they differ by size, and because we want to remove this fragment here, we can use some type of purification method, for example, gel electrophoresis, to remove this molecule here. And so after the purification method, we have this molecule. And now we can place our cassette, that newly synthesized DNA molecule that was created in the laboratory. We can basically make it in such a way that the ends contain the sticky ends, complementary ends, which can stick to the end of this initial orange strand of DNA.