Yes, there are people with genetic disposition to high IQ. Take for instance Maria Vos Savant. Look at her name. It is her family name "From the Savants". There is a familial history of high intelligence of such long standing, that it is the family name. Look at Carl Sagan. His ancestors came from a village in Germany called Sagan. The term sage, or sagan, implies high intelligence. There are families who have this gift. Furthermore, understanding how intelligence is grown, how the mind grows, helps those families facilitate the growth of intelligence in their own offspring. They raise their children intelligently. Look at Kurt Vonnegut/Kurt Vonnegut. I am not smart enough on the spot here, to remember other family names that imply historic high intelligence, give me a month or so...