Vanasti olid kõik maa inimesed valgenahalised.

Mul ei ole aega Mäeoru artiklit lugeda.. kas ta tegelikult ka seda väitis, aga

"around 8,000 years ago in what's now Turkey — just when humans were starting to milk newly domesticated cows, goats and sheep — mutations near the gene that produces the lactase enzyme started becoming more frequent. And around the same time, adult lactose tolerance developed. The mutation responsible for that may be between 2,000 and 20,000 years old; estimates vary.

But in order for that new trait to have persisted over many generations, something unique must have given milk drinkers an evolutionary edge."