"The genetic claim is not only untrue it is indicative of people who want to find anything to justify their own prejudices."

Well if everyone has the very same ability to grow their minds and obtain high IQ's then what is stopping other people from achieving higher IQ's? The Dutch are quite tall, why are the Japanese allowing the Dutch to out height them....same kind of reasoning on display.

Nurture is a PART, Nature is a PART the question is "To what extent?"