Anyone who has worked with DNA in the laboratory is undoubtedly familiar with the polymerase chain reaction - PCR, as it’s usually known.

Invented in 1985, PCR is an indispensable molecular biology tool that can replicate any stretch of DNA, copying it billions of times in a matter of hours, providing enough DNA to use in sequencing or further research, or for applications like forensics, genetic testing, ancient DNA analysis or medical diagnostics.

It’s hard to overstate the transformation that PCR brought to the world of molecular biology and biomedical research. Suddenly, researchers could amplify and study DNA in a way that had been simply impossible before, kickstarting the genetic revolution that’s still going strong today.

So where did this revolutionary technology come from? Officially, PCR was invented in 1985 by a colourful character called Kary Mullis, who won a Nobel Prize for the discovery (more on him later). But, as we’ll see, all the components of PCR were in place by the early 1980s - it just took a creative leap to assemble them into one blockbusting technique.

Listen to the full episode and find a transcript at GeneticsUnzipped.com.

Genetics Unzipped is the podcast from the UK Genetics Society and is produced by First Create the Media. Follow Genetics Unzipped @geneticsunzip, and the Genetics Society @GenSocUK on Twitter.

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