Sixty years ago Cambridge scientist Francis Crick from Northamptonshire and his partner James Watson famously mapped out the structure of DNA.
James Watson has travelled from America back at his old college in the university city to unveil a memorial to his former colleague who died in 2004.
Their work opened up vast new avenues in the understanding of the genetic code and won them a Nobel Prize.
Click below to watch a report by ITV Anglia's Claire McGlasson:
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