Just a FYI....
Ashkenazi Jews
Their average I.Q is about 110, the highest in the world (Europe, America, South Africa). They also have the highest standard deviation at 17, which further increases their representation among the highest I.Q.
With a population of only 10 million people, they won no less than one-third of the world’s Nobel Prizes and represent 50% of the chess champions.
There is a link between their high intelligence and the particularly high frequency of certain genetic diseases in their population.
Ashkenazim also have the highest frequency of myopia of birth, myopia is correlated to +0.25 with human intelligence. The explanation could be a pleiotropic gene, ie a gene that has an impact on both the eyes and the central nervous system, namely the brain. It should be noted that the eyes are extensions of the central nervous system. Kirkegaard et al. (2009) show that Ashkenazi Jews have an higher GWAS score for educational attainment (mainly high I.Q genes) as compare to non Jewish Europeans.