The first step in gene cloning is identifying the DNA sequence for the gene you want to clone. This means that you need to find out which genes produce proteins that are important in the body. Once you know the protein, you can go about designing the synthetic version of the gene that produces the protein. Then you have to design the vector that allows the new gene to be copied into the host cell. Finally, you must insert the new gene into the vector, and then infect the bacteria with the vector containing the new gene.