A testable prediction made by the Theory of Evolution.
Do predictions that contradict evolution theory count or only the ones that allegedly confirm it?
I don't understand by what else one would make a prediction than according to a scientific theory. If the theory makes a prediction that subsequent evidence does not support, then the theory clearly needs to be modified. Our understanding of evolution has changed enormously, as we discover new elements of paleontology, geology and genetics.
Give an example.