EE BIOL 120
Evolution
Lecture and discussion. The registrar has published a final exam time.
Fall 2026: 1 lecture and 6 discussions. 1 lecture and 3 discussions are open. The oldest of these readings was 7 hours ago.
Grades
3.43
Average grade awarded in EE BIOL 120. Not a student rating: this is what the grades were.
In the A range
60%
of the 487 letter grades
D, F or W
1.0%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
<1%
2 of 2 students passed
The registrar's own records: 487 grades over 7 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
4 of those terms are summer sessions, and summer sessions are counted here.
The table below splits them, and term averages across those 7 terms ran 3.05 to 3.83.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 48 · 9.9%
- A 133 · 27.3%
- A- 110 · 22.6%
- B+ 53 · 10.9%
- B 69 · 14.2%
- B- 22 · 4.5%
- C+ 17 · 3.5%
- C 20 · 4.1%
- C- 10 · 2.1%
- D 2 · 0.4%
- D- 1 · 0.2%
- F 2 · 0.4%
- P 2 of 489
Percentages are of the 487 letter grades. Grey bars are non-letter outcomes: passes (P).
How the non-letter outcomes are counted
They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Fall 2026 |
|---|---|---|---|---|---|---|---|
| GORLITSKY, LERYN reviews ↗ | 3.33 | 3.33 | 338 | 5 | 53% | - | not teaching it |
| CALDERA, ERIC J reviews ↗ | 3.64 | 3.67 | 113 | 1 | 75% | - | not teaching it |
| GORLITSKY, LERYN E reviews ↗ | 3.60 | 3.68 | 36 | 1 | 78% | - | not teaching it |
Why Predicted is not the Raw average
“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.
What the work looks like
- 2 exams, said by 6 reviewers
- Quizzes mentioned, no number given, said by 4 reviewers
- Papers mentioned, no number given, said by 2 reviewers
- Problem sets mentioned, no number given, said by 4 reviewers
- Projects mentioned, no number given, said by 1 reviewer
- Presentations mentioned, no number given, said by 2 reviewers
Read from 20 reviews 27 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.
What comes first
The chain dibs can see is 3 courses long before EE BIOL 120. This is a floor, not a deadline: dibs has not read a class page for LIFESCI 30B and MATH 3B, so the real chain can only be longer than this, never shorter.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
From the registrar's catalog
Lecture, three hours; discussion, two hours. Requisites: Life Sciences 1, 2, 3, 4, and 23L, or 7A, 7B, 7C, and 23L, Mathematics 3A and 3B (or 31A or Life Sciences 30B). Not open for credit to students with credit for course 185. Designed for departmental majors specializing in environmental and population biology. Introduction to mechanics and processes of evolution, with emphasis on natural selection, population genetics, speciation, evolutionary rates, and patterns of adaptation. P/NP or letter grading.
Sections in Fall 2026
You enroll in the discussion, not the lecture, so a discussion's status is the one that decides whether you get in. A lecture can read open while every discussion under it is full.
Seat counts as of : the oldest of these 7 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.
-
Lec 1 MW 3:30pm-4:45pmOpen
Chen, N.
3.44predicted, all instructors · 487 grades4 seats left. 116 of 120 enrolled high risk
6 discussions, 3 open: Dis 1A, R 2:00pm-2:50pm, Dis 1C, R 4:00pm-4:50pm, and Dis 1E, F 12:00pm-12:50pm.
Every discussion, with its time and seats (6)
-
Dis 1A
R 2:00pm-2:50pm · Royce Hall 154
Open1 seat left.
19 of 20 enrolled
-
Dis 1B
R 3:00pm-3:50pm · Royce Hall 154
Closed20 of 20 enrolled
-
Dis 1C
R 4:00pm-4:50pm · Renee and David Kaplan Hall A32
Open1 seat left.
19 of 20 enrolled
-
Dis 1D
F 11:00am-11:50am · Public Affairs Building 1284
Closed20 of 20 enrolled
-
Dis 1E
F 12:00pm-12:50pm · Public Affairs Building 1284
Open2 seats left.
18 of 20 enrolled
-
Dis 1F
F 1:00pm-1:50pm · Public Affairs Building 1278
Closed20 of 20 enrolled
-
Final enrollment, averaged across each term's sections: between 103 and 113 a term over 3 terms, summer excluded, most recently 103 in Fall 2025. That is the shape across years, not this term, which is above.
From the people who took it
Student reviews
What taking EE BIOL 120 was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.
Looking for more perspectives?
External reviews are separate and do not count toward the dibs rating.
Seats over time in Fall 2026
How each lecture has filled since dibs first saw it.
A dot is a reading where something moved: the seat count, the status, or the waitlist.
What a flat run means, and where a line starts
Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.
Lec 1 · Chen, N. · 116 of 120 enrolled
Nothing read since 2 Oct, 3 hours ago. Over about 1 month before that, filled by 16.
How readings and alerts work
A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.
Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.
The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.