From: Pigmentation in Drosophila melanogaster reaches its maximum in Ethiopia and correlates most strongly with ultra-violet radiation in sub-Saharan Africa
West
East
Ethiopia
South
Cosmopolitan
0.38
4.09
3.85
1.60
2.37
3.71
4.23
1.97
4.36
1.99
7.94*
5.69
4.30
6.67
8.66*
2.25
1.57
3.94
5.93
2.73