Where substantial overlap exists between two courses, credit will be granted for only one even if they are not listed as antirequisites.
Some Science Departments offer both Honours and General equivalent courses. It is the student's responsibility not to duplicate subject matter. Credit will only be given for one of such overlapping courses (e.g., CHEM 266 or 264; PHYS 111/112 or 121/122).
This rule also applies to courses offered by various Departments throughout the University which sometimes deal with similar subject matter (e.g., BIOL 250 and ENVS 200).