I have read the opposite hypothesis, that is, people with exceptionally high IQ have a smaller mutation rate so to speak. The argument is based on the belief th

I have read the opposite hypothesis, that is, people with exceptionally high IQ have a smaller mutation rate so to speak. The argument is based on the belief that most mutations are destructive or disruptive and thus, when intelligent people procreate, there are fewer chances for the offsprings to be as intelligent or smarter than parents due to mutations. In essence, it is the same argument as to why it is harder for viruses to become more potent through mutations. However, I am not a geneticist nor a virologist or anything remotely close so take my comment with a large grain of salt.