While there isn't a specific sleep gene, scientists studying the sleep habits of fruit flies have found evidence suggesting a strong genetic component.
"Handedness has a genetic basis, but like other complex traits - height, weight - it is complex," he said. "it's not a single gene that leads to it."There's a strong environmental component, too.
"Handedness has a genetic basis, but like other complex traits - height, weight - it is complex," he said. "it's not a single gene that leads to it." There's a strong environmental component, too.