Most mixed nations?

[SocialPhobiak]

According to this map, the most mixed nations seem to be Turkic peoples.(and of course usa.) I think this is an advantageous situation. Because just as disabled children are born in marriages with close relatives, more advantageous people are born in interracial marriages. This must be the reason why we can adapt to any geography. Hybridity is good for adapting to different geographies and combining different traits.

[Incal]

Could be. But then again there's no people as prone to allergies and diseases as Yanks (probably just the "whites").