<prompt> Effective polymerase reaction was repeated for 3 cycles on a DNA molecule. What will be the resulting formation of the copies?Double number of copiesThree times the number of DNA moleculeFour times the number of DNA moleculeEight times  <response>: Polymerase Chain Reaction The number of copies of the paicle after n cycles of Polymerase Chain Reaction is given by the formula 2n times the original copies. So, the number of copies after 3 cycles would be 23 8 times the original copies. PCR is used to amplify DNA but - PCR reverse transcriptase PCR can be used for studying mRNA. 