Bandera de Estados Unidos

Un sitio oficial del Gobierno de Estados Unidos, Departamento de Justicia.

Principles of Forensic DNA for Officers of the Court

STR Amplification

Home  |  Glossary  |  Resources  |  Help  |  Contact Us  |  Course Map
 

Amplification uses the PCR process to create copies of specific DNA target regions from the original sample. The STR amplification process also incorporates chemical labels (e.g. fluorescent dyes) for subsequent detection of target alleles.

The actual procedure involves the heating and cooling of samples in a specific pattern in an instrument called a thermal cycler. After approximately 30 cycles, a 'PCR Product' (amplicon or amplified product) is created and subsequently tested.

Animated illustration of DNA strand on copy machine, making copies.
National Institute of Justice (NIJ) (ver política de reutilización).

Back Forward