| Course level |
| <100 |
freshman seminars |
| 100 |
freshman courses |
| 200 |
second level undergraduate courses |
| 300 |
second level undergraduate courses |
| 400 |
for undergraduates, with some graduate students |
| 500 |
for advanced undergraduates and graduate students |
| 600 |
for graduate students & advanced undergraduates |
| 700 |
graduate students only |
|
| Topic area (2nd digit) |
| 0,1 |
general topics courses and basic courses |
| 2 |
genetics and miscellaneous |
| 3 |
molecular biology, biochemistry |
| 4 |
cellular and developmental biology |
| 5 |
miscellaneous OEB |
| 6 |
ecology |
| 7 |
courses that fulfill organsimal requirement |
| 8,9 |
special topics and research |
|