Presenter Dr Kat Arney explores the importance of randomness in genetics. How can we explain differences between individuals with identical nature and nurture? We look at how Ben Lehner’s worm-breaking research has changed our understanding of epigenetics.Full show notes, transcript, music credits and references online at GeneticsUnzipped.com Follow us on Twitter @GeneticsUnzipThis episode of Genetics Unzipped was written and presented by Kat Arney with audio production by Sally Le Page.This podcast is produced by First Create the Media for the Genetics Society - one of the oldest learned societies in the world dedicated to supporting and promoting the research, teaching and application of genetics.