Genotype is not the only thing that effect phenotype because you have environment effects as well that can cause a vary of things.....
True. It also states that they cannot compete for the same resources.<span />
In fact, the concordance rate of autism spectrum disorder was twice in identical twins that of non-twin siblings.
It has been shown that genetic has a huge influence on the development of autism spectrum disorder and that autism in identical twins was 13 times that of the general population. This suggest that environmental factors in the womb are the major factors that contribute.
