It is not that genes account for all of the risk for autism, but yet they account for a lot of that risk, because when you look at fraternal twins, that concordance rate is only 31 percent.
Nuk eshte se genet jane pergjejgjes  per te gjitha rreziqet per autizem, por jane pergjejgjes per nje pjese  te mire te tyre, sepse kur sheh binjaket heterozigot, kane konkordance vetem prej 31 perqind.