Three children grew up in the same household, raised by the same parents, exposed to the same environment. Yet their lives unfolded in dramatically different ways—all because of a single gene.
The older brother met all of his early developmental milestones and could read at the age of 5. He had an excellent memory for car license plates and could make rapid mental calculations. His social deficits, however, came to light once he started school. He was socially awkward, had few friends, couldn’t understand social cues, and was prone to mood swings. He was diagnosed with Asperger’s syndrome, which is under the autism spectrum disorder label.
