DNA enrichment

The PCR thermo cycler amplifies fragments of genomic DNA during the polymerase chain reaction. Diagnostic gene fragments (genetic markers) for taxon identification or characterization of new genetic diversity are amplified in extractions from recent and ancient sedimentary DNA or from organismic material. 

qPCR (quantitative PCR) is similar to PCR, but also enables a relative quantification of DNA during the PCR cycles and is used to quantify DNA libraries prior to DNA sequencing or for SNP detection using high-resolution melting curves.