What's in a gene? We wade into the world of genetics, to find out all about an extensive DNA mapping project called the Irish DNA Atlas and to see what it can tell us about the history of Ireland. We also take a look at the phenomenon that is at-home DNA ancestry tests, which have exploded in popularity in the past few years, as well as exploring the ethical or legal concerns they might bring up. Finally, we take a deep dive into our own genetic legacy, revealing the potential secrets hidden in our DNA...

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