Can Mystique mimic the mutant powers of somebody she morphs into?
Not usually. For instance, if she adopts the form of a larger person, she doesn’t have their strength, and actually has to strain to maintain the larger form. However, she’s been shown creating some physical features like claws, working wings, fur, scales, extra arms, and eyes adapted for darkness, so obviously she can mimic some aspects of other mutants. No doubt these can be a strain on her, though, which is probably why she doesn’t use these features all the time.
