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Originally Posted by affluenza
Countries with the most blue- eyed people by percent:
1 Estonia 89
2 Finland 89
3 Sweden 78
4 Iceland 75.5
5 Netherlands 60.9
6 Denmark 59.6
7 Ireland 57
8 Norway 55
9 Poland 52.5
10 Scotland 50
11 England 48
12 Wales 45
13 Slovenia 44.7
14 Germany 39.6
15 Belgium 28.9
16 Ukraine 25
17 France 22 !
18 United States 16.6 !
19 Spain 16.3 !
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This is not at all surprising if you think of the ancestry and climate of each country. There aren't many people in Portugal with blue eyes because the gene for brown eyes is dominant. The gene for blue eyes is a mutation, so there's less variation - hence the common ancestor.
My mum has brown eyes and my dad has blue eyes. As no one in my Mum's family has ever had blue eyes she doesn't carry the gene for blue eyes. I have brown eyes - and because of my dad, I carry the recessive gene for blue eyes. That means I can have a blue eyed baby with someone who has the genes for blue eyes.