what is the role of dna in pcr
1 answer
The role of DNA in PCR (Polymerase Chain Reaction) is that it serves as a template for the amplification of a specific DNA fragment. PCR uses a synthetic DNA primer that is complementary to the DNA sequence flanking the region of interest. The DNA primer anneals to the target DNA region and serves as a starting point for the Taq polymerase to extend and synthesize new DNA strands. As a result, PCR enables the amplification of a specific DNA fragment from a small amount of starting material, making it useful in a wide range of applications such as genetic testing, gene expression analysis, diagnosis of infectious diseases, and DNA sequencing.