Genetic cloning was originally used by transferring a fragment of DNA to a different genetic element that would replicate well with the fragment. Many times a bacterial plasmid was used to accomplish this. More recently though, biologists use polymerase chain reactions (PCR) to amplify the gene, and the PCR method takes less time than gene cloning to produce a pure sample. Class, why is gene cloning still necessary today, even with the advanced development of PCR biotechnology?