And for the organism that contains this genome, we have only five genes. And so we have these five beakers that each contain a specific type of gene molecule within that lambda phage. So in step six now, we actually want to screen that genomic library to find that specific gene of interest. So once we create the genomic library, we can screen the library to detect that specific gene that we want to isolate and study. And so what we do is we take the petri dish. And on the petri dish, we basically spot the petri dish with these bacterial cells that are not infected.