This episode of This World of Humans features an interview with Professor Dan Graur, from the University of Houston, who has just published a new article estimating that at least 75% of our DNA has no function whatsoever. The issue of so-called “Junk DNA” is a controversial one, with scientists passionately disagreeing about exactly which parts of our genome do function, and how, and which parts do nothing at all. TWOH host Nathan H. Lents interviews Dan Graur, a leading expert on genome evolution, about junk DNA and his recent paper.

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