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@Chalfie
Hey I'm not professing expertitude here, so I reckon I'll fit in with all the 80km/h pull talk right? My thinking started with, "how long would an adaptation like this last".
Apparently there are three significant populations living at significant altitude. The andeans, Tibetans and ethiopians.
I just read the Andean bit, thought, yeah population migration, are they likely to be very different (danger, they could be because of geographic isolation)maybe not.
It obviously depends on when people from Colombia diverged from people from the Andes, what's his genetic background, where did he live and train, higher than 2500 m?