University of Copenhagen
A team at the University of Copenhagen have tracked down a genetic mutation which took place 6-10,000 years ago and is the cause of the eye colour of all blue-eyed humans alive on the planet today.
The timeframes here are interesting too - at the lower end, you have the mutation of taking place around the same time this population arrives with the mutation. At the upper end, there is some time for a large population to form from the initial mutation which does seem more likely. Given the relative recency of blue eyes to this timeframe, perhaps they were seen as unusual or desirable in some way.
Edited 1 time(s). Last edit at 05-Jan-20 11:13 by engbren.