So let's begin by discussing how to actually make that genomic library. So let's begin with step one. Let's suppose in a single beaker we have a solution that contains that complete genome. So for simplification purposes, we have a genome in this diagram that only consists of five different genes. So we have this dark green gene, we have the red gene, light green gene, we have the dark purple gene and the light purple gene. Now we take restriction enzymes and we add restriction enzymes into that mixture.