Of course, any number of subsets of the theory being disproved could falsify the super-set theory. But if there are two super-set theories, and you cannot falsify one over the other, then those collections are not falsifiable.

Some philosophers argue that all the subsets of evolution - genetics, mutations, natural selection could still support permanence of species with local changes. Until you can create an entirely new species in a laboratory without direct gene editing, there cannot be positive proof for evolution - but till that is done, there is no negative test that would disprove that evolution is the consequence of all its component hypotheses.

Personally, I don't see any reason to doubt evolution, considering it is neat and beautiful. But at the same time, I can see that it hasn't been built via the same scientific method seen in physics.