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https://news.ycombinator.com/item?id=17055327
In your paragraph “similarity” refers to looking at just one genetic locus (essentially one gene) at a time.
To say that there is more variation within a race than between races when examining a single gene at a time does not support the notion that there are black Africans “much more related” to white Europeans than to each other.
The fact that there is more genetic diversity among black Africans than among white Europeans doesn’t support that claim, either.