oh, totally. the whole point of modes is that it's the same pitch class of every other mode based around that major key - like, a dorian is the same as c lydian and d mixolydian and f# locrian. it's how those pitches are used - what's tonic, where the dominant is (in a dorian, the dominant isn't D, which is major, or e, which is a form of v, but actually G, which is VIII), etc.
that's the point of all alternate tonal structures, really - it's not the size of the pitch class set, but how you use it