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In 2000 the HGP quoted an audacious statistic about the level of DNA similarity between different humans that was quickly adopted by academics, pro-egalitarian activists, and race-deniers. These groups have loudly championed this statistic with patronizing adulation ever since. 
But is it true? The HGP’s findings were predicated on the assumption that all parts of human genome are identical except for SNPs (changes to single nucleotides that can regulate allelic expression in genes) which they calculated at a maximum variance of 0.1% between all humans.
Studies involving a new trend in molecular genetics called DNA copy number variations (CNVs) that challenges the stat. were first published in 2002 but have been absent from much of the subsequent social commentary and mainstream news articles.
