About one and every 10,000 babies are born with two or too many genes on chromosome 15. The likelihood that these babies will be on the autism spectrum is a high 80%. NO specific gene has been identified to cause aspergers. Scientists aren’t sure what causes autism (aspergers) spectrum disorder (ASD), but it’s likely that both genetics and the environment of a person play a role. Researchers have identified a number of genes associated with this disorder. Studies of people with ASD have found irregularities in several regions of the brain. Other studies suggest that people with ASD have abnormal levels of serotonin or other neurotransmitters in the brain. These abnormalities suggest that ASD could result from the disruption of normal brain development early in fetal development caused by defects in the genes that control the brain growth and that regulate how brain cells communicate with each other, possibly due to the influence of environmental factors on the genes function. These finding are preliminary and require further studies.