Please try again later. Butane Heating Services deliver Calor Gas equipment to North London, Visit the website at www.ButaneHeatingServices.co.uk, post your questions and suggestions in the comments or Freefone on: 0800 345 7177.Category. License.lease try again later. Butane Heating Services deliver Calor Gas equipment to North London, Visit the website at www.ButaneHeatingServices.co.uk, post your questions and suggestions in the comments or Freefone on: 0800 345 7177.
The polymerase chain reaction (PCR) is a technology in molecular biology used to amplify a single copy or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence. If the genomic DNA sequence of a gene is known, RT-PCR can be used to map the location of exons and introns in the gene. 2  The 5' end of a gene (corresponding to the transcription start site) is typically identified by RACE-PCR (Rapid Amplification of cDNA Ends).
polymerase chain reaction / PCR. Polymerase chain reaction, or PCR, is a laboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to amplify, or copy, a specific DNA target from a mixture of DNA molecules.hen, to perform PCR, the DNA template that contains the target is added to a tube that contains primers, free nucleotides, and an enzyme called DNA polymerase, and the mixture is placed in a PCR machine. The PCR machine increases and decreases the temperature of the sample in automatic, programmed steps.