And what the restriction enzymes do is they cleave our genome into different fragments and these different fragments will contain the different genes. So we basically break our genome into these five fragments. Now, let's suppose that these five fragments all different size, so some are large and some are small. And what that means is, in the next step, in step two, we can use gel electrophoresis to basically separate the different fragments based on size up to a size value of 15 KB, where KB is kilo basis. So we run our gelatrophries and those fragments that end up at the bottom are the smallest, while the fragments that end up at the top are the largest. And each one of these fragments contains some type of gene.