Blue eyes all come from a single ancestor

All blue eyes come from a single ancestorA recent paper from Denmark (where else?) suggests that everyone with blue eyes is descended from a single ancestor.  I have blue eyes and so find this particularly interesting.  I think it is fair to say that blue eyes are considered more attractive than brown ones- though this isn’t a major factor when it comes to what we find attractive.

Usually you can find some evolutionary advantage to attractive features.  But I cannot think of any advantage to having any particular eye colour.   I think it is simply that blue eyes are in a minority and so have a bit of novelty value.


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