Polymerase chain reaction is used for the amplification of DNA molecules. PCR is important as it is widely used in:
- Clinical diagnosis.
- Prenatal diagnosis of inherited diseases.
- Diagnosis of retroviral infections.
- Diagnosis of bacterial infections.
- Diagnosis of cancers.
- Sex determination of embryos.
- DNA sequencing.
- Gene manipulation and expression studies.
- Comparative studies of genomes.
- Forensic sciences.
- Comparison with gene cloning.
- DNA based phylogeny
- Functional analysis of a gene.