Clearly you don't understand genetics as well as you think you do.
Separation of groups leads to a greater over-all genetic variance. This is how for instance how species are formed from a common ancestor.
What you've failed to realise that "the studies that have been presented" to you recognise that 85% of our genetic variation is within populations.
Thus me and "Fred" down the road may have 85% variation of genes. However, I also have 85% variation in regards to a Kenyan, plus an additional percentage due to a separation of our populations.
It's absurd and false to believe that I am more similar genetically to "Mubaba" the Kenyan than I am to "Fred" because our ancestral populations have long ago ceased interacting.
This would mean that my genes as an individual have converged to be more similar to "Mubaba's" than to "Fred's" simply due to the fact that our ancestral population split thousands of years ago.
All genes have converged the only .01 difference is the melatonin of our skin. their will be a divergence though, as time goes on. A Yale doctor has already proposed this theory, races will converge but through this convergence a divergence will occur and it will be a inferior "race"
Tomy I'm sorry are you composed of all inferior races or something, my deepest sympathy.
But hope may last for you yet...well that is for your childrens childrens children....
Nordic seperation of population really does not date back that far, after the ice ages and extreme weather, the human race formed near Africa, and banded together. Hence the only thing different is the pigment of our skin, genetically. But it also lead to a divergence of IQ, as some groups communicated more, and some less, some developed different child rearing practices while some adopted alot less (leaving newborns isolated...for fear of the sun god) those babies I won't mention it, still score below the average IQ mean.
But, more reasearch may prove that combining all of this, means a supreme human being. wtf will science tell us next, adonis is a bodybuilder?