http://www.amalgam.org/

Please check this site out now for Hg Toxicity from "Cavities" filling!

Wil: You asked~Autism gene or gene affected by Toxic exposures or stressors?

There are five things they mention about "Directed Evolution" now.
1) Allelic imbalance resulting in Chromosomal abnormalities.
2) Aberrant promoter methylation ( as in a case of a mother w mouth full of Hg fillings)
3) Gene mRNA over expression (as in infectious diseases that may be endogenous, resulting in too many "jumping genes" as in Immune system responses overload)
4) Microtubules alterations (as in cell walls' disorder due to toxic substances and infections)
5) polymorphisms (one problem, as in ASD where not all kids exihibit the same symptoms, yet they all fall under ASD).

In order for ASD to manifest, genes have to be abnormal in a child. They become abnormal due to several triggers within the body as well as from outside. Shared envtl. factors are all the same basically for all kids in a given geographical area.

But indl, personal, internal matter from mom or DAD, which may act as a customized trigger for each child to produce ASD at various degrees. The genes may crumble down very slowly to manifest symptoms but all before 30 months of age, from what I know.

I hope this answers your question. Also think about
1) Separate creation 2) Transformism 3) Evolution process. These three may occur together in 21st century.

I don't accept that only Theory of Evolution is valid.
That is uniformitarianism, which limits species' evolutionary process by the methods that we use w out imperfect senses and intellect.