I was laughing once when someone told me that kids are coming to him to ask for advice just because he looks like an adult. Almost laughing, if I did not know the guy. He was just a big child.
By the way, check the work of Polgar, a bit of crazy guy that demonstrated that genius and achievement is matter of education, more than genetics, he had 3 girls, and liked chess, and all three reached Grandmaster rank in chess, something that defied any statistics.