This is not a type of marker system, however it is a key step in many of the systems that we use at DNA LandMarks. PCR is a common procedure in microbiology used to amplify (make multiple copies of) a specific sequence of DNA - it is the photocopier of DNA work.
This reaction requires a special type of polymerase enzyme, deoxyribonucleotides (DNA's primary components), specific nucleotide sequences called primers and the template DNA (DNA from the specimen under study).
