169
Map of Europe showing frequency of red hair
(sopuli.xyz)
Cross post from: https://vis.social/@infobeautiful/114387144996151835
The upper third of Finland is in the Arctic circle, I should remind you.
Do you disagree that the further away from the equator you go, the less sun you get, and the less effective that sunshine is?
I should like to remind you that Finland has the highest prevalence of blondes in the world. And what is that an adaptation to, do you know?
I'm just joshing you about the incest, but it is a thing.
However it's a bit more complex as to why Northern Europe has less gingers, and I'm sure it's not because there's no invest.
https://www.eupedia.com/genetics/origins_of_red_hair.shtml#45th_parallel