In Reply to: Re: Let's get this straight posted by Thinker on December 12, 2007 at 12:11:48:
"Some scholars have proposed that in order to make a racial hypothesis about intelligence the genes for intelligence need to be identified along with their frequencies in the various populations. However recent studies attempting to find regions in the genome relating to intelligence have had little success. A recent study used several hundred people in two groups, one with a very high IQ, average 160, and a control group with an average IQ of 102. By the fifth step the study could not find a single gene that was related to intelligence. Critics of these studies say the failure to find a specific gene associated with intelligence is indicative of the complex nature of intelligence. They contend that intelligence is probably under the influence of several genes. Some estimate that as much as 40% of the genome may contribute to intelligence."