Why Oh Y

Several hundred genes are likely involved in autism, according to the latest trio of studies looking at the genomes of children with the disorder. But let's not forget that one of the most intriguing genetic links has been known for decades. Autism affects four times as many boys as girls. And at the level of DNA, there's only one difference between the sexes: Girls have two X chromosomes, boys an X and Y.So why don't we hear more about that Y?The male chromosome only carries about 60 genes, of which 2 have been linked to autism. Nevertheless, some new research on children born with extra sex chromosomes suggests that there may be more than meets the Y.Read more at...SFARI, April 2012.