What can doppelgangers tell us about nature v nurture?
Science Weekly
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The Probability of Having a Doppelganger
Manel Estella: The probability is extremely high, that you have somebody that looks almost identical to you. Of course, all of us who have a face that is more or less average - then it's more likely to have a look alike. If you want to see some photos of the doppelgangers in the study, there's a link on the podcast webpage at theguardian.com.
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