Polymerase chain reaction (PCR): An experimental technique invented by Kary Mullis used to exponentially amplify DNAplugin-autotooltip__default plugin-autotooltip_bigDNA: deoxyribonucleic acid. The genetic material for nearly all life on Earth. in vitroplugin-autotooltip__default plugin-autotooltip_bigIn vitro: taking place outside of a living organism, usually in a test tube or Petri dish.. PCR made obtaining large quantities of DNAplugin-autotooltip__default plugin-autotooltip_bigDNA: deoxyribonucleic acid. The genetic material for nearly all life on Earth. for analysis much faster and easier than using traditional cloningplugin-autotooltip__default plugin-autotooltip_bigClone: Depending on the context, this word can have a few different meanings:

* In the context of genes, cloning means that the physical identity of a gene has been found, and the gene has been sequenced. * In the context of DNA, a cloned DNA fragment is one that has been inserted into some kind of methods.