Originally posted by Vicky32

Originally posted by TKDRL
reply to post by HeresHowItGoes

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I don't think IQ is passed through genes. I could be wrong, but I have met some pretty stupid kids coming from smart parents, and vice versa.

It's not....

Genetic influences on brain morphology and IQ are well studied. A
variety of sophisticated brain-mapping approaches relating genetic in-
fluences on brain structure and intelligence establishes a regional distri-
bution for this relationship that is consistent with behavioral studies. We
highlight those studies that illustrate the complex cortical patterns asso-
ciated with measures of cognitive ability. A measure of cognitive ability,
known as g, has been shown highly heritable across many studies. We
argue that these genetic links are partly mediated by brain structure
that is likewise under strong genetic control. Other factors, such as the
environment, obviously play a role, but the predominant determinant
appears to genetic.

More is known about the genetics of intelligence than about any other trait, behavioral or biological, which is selectively reviewed in this article. Two of the most interesting genetic findings are that heritability of intelligence increases throughout the life span and that the same genes affect diverse cognitive abilities. The most exciting direction for genetic research on intelligence is to harness the power of the Human Genome Project to identify some of the specific genes responsible for the heritability of intelligence. The next research direction will be functional genomics—for example, understanding the brain pathways between genes and intelligence. Deoxyribonucleic acid (DNA) will integrate life sciences research on intelligence; bottom-up molecular biological research will meet top-down psychological research in the brain.