These twin brothers are identical, but their autism isn't
Sam and John Fetters, 19, are identical twins at opposite ends of the
autism spectrum.
Sam is a sophomore at Amherst College who plans to double major in
history and political science. In his free time, he runs marathons.
John attends a special school, struggles to form sentences, and likes
to watch "Teletubbies" and "Sesame Street."
Two brothers. Same genes. Different flavors of autism.
To scientists, twins like Sam and John pose an important question: How
can a disorder that is known to be highly genetic look so different in
siblings who share the same genome?
"That is one of the greatest mysteries right now in research on
autism," says Dr. Stephanie Morris, a pediatric neurologist at the
Kennedy Krieger Institute in Baltimore.
https://www.npr.org/sections/health-shots/2024/04/04/1242264274/siblings-science-identical-twin-brothers-autism-spectrum
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