The poster I originally responded to claimed there was "no scientific evidence" for differences in IQ being based on genetics. There is significant evidence for

The poster I originally responded to claimed there was "no scientific evidence" for differences in IQ being based on genetics. There is significant evidence for genetics being the largest reason for IQ differences between individuals. Regardless of the semantics of the quote you posted, a reading of the full article elucidates that there is an open debate as to what role genetics plays in group differences in IQ, with lots of varying opinions and evidence.