<p>Can someone explain how the "tracks" work for CHEN? It looks like the general track is listed in the online catalog, but there's no explanation of how the substitutions would work. If you sub one class from the Bio track do you have to sub in ALL of them or can you mix & match as long as you have the pre-reqs?</p>
<p>My son is emailing his advisor to ask, but I thought someone here might know.</p>
<p>Thanks!</p>