>>712528623
>>712528230

and adding onto "intelligence genes", there are no general "IQ genes", there are genes that improve things like working memory, fluid intelligence, crystalized intelligence etc..

For example you might have a gene that gives you a "bigger" visual cortex, or improved connections in it, this would result in you scoring better in spatial reasoning tests, even being better at geometry

you can also improve this region of the brain in a new born baby by letting him play with legos or interact with objects that help him understand shapes and 3D objects (which will result in his visual cortex being even more developed as he's using and training it)

You may also have genes that result in thicker myelin sheathes (like how wires have rubber insulation, your neuron's axons (wires) have this coating) which would result in better signal quality and therefore better processing and "higher IQ". of coruse this gene has nothing to do with intelligence, it results in overall signal quality across your whole body's nervous system, however also results in higher IQ scores

same with genes for more "powerful" mitochondria (which would result in over all body health for all organs/muscles/etc..., and by extension more "powerful" brain) , also genes for neural density, etc...

tall genes also result in a bigger body (your made up of more cells) = bigger organs = bigger brain, and therefore you have more neurons to do more calculations with and therefore higher IQ (each extra inch roughly equals a single IQ point)

There are genes for better cognitive abilities, however other non-intelligence genes can also result in higher IQ (and of course scientists arbitrarily would use their best judgement to classify a gene as an intelligence gene or not)