For more information, check out the source article at Not Exactly Rocket Science.

The gist of this article is that there are six gene variants involved with producing the proteins that form brain synapses, all common in the general population, which appear together in people with forms of Austistic Spectrum Disorder (ASD) in about 15% of cases, strongly suggesting that in some cases at least, there is definitely a genetic link.

It’s an eloquently written article, and if you have any interest in possible causes of autism and Aspergers I suggest you check it out.