EE BIOL 120
Evolution
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 | Spring 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 26 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. Read from Fall 2026, because dibs has not read a class page for EE BIOL 120 in Spring 2026 and a department can change what it requires. 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 Spring 2026
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.