Following synthesis and at the end of the first cycle, each double-stranded DNA molecule consists of one new and one old DNA strand. PCR then continues with additional cycles that repeat the ...

View Full Profile. Learn about our Editorial Policies. Polymerase chain reaction (PCR) is a fundamental molecular biology tool that scientists use to amplify and analyze genetic material, such as DNA ...

The method can even be multiplexed, if the various PCR products can be size-fractionated sufficiently. Even old, degraded DNA yields enough signal to perform the analysis. For maximum signal ...