You Are Human, Right?

In New Scientist, Peter Aldhous recounts that Blaine Bettinger emailed him to ask about his DNA profile: "This is a strange question, but are you sure this is Homo sapiens?" Sometimes, when looking at his DecodeMe data, Aldhous's mitochondrial DNA marker would appear to have undergone a "bizarre mangling." Other times, though, it matched his 23andMe data. The problem, Aldhous discovered, came from a bug in Decode's database software.

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