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Ecology, Behavior & Evolution

This major includes the fields of population biology, ecology, conservation biology, animal behavior, population genetics, biogeography, and evolution. These fields have in common a focus on evolutionary processes and whole organisms in relation to each other and to their environments. Research careers in ecology, behavior, and evolution can be found in universities, government agencies, and the biotechnology industry. More applied careers for ecologists are equally varied: recent graduates now work in forestry and wildlife management, as ecological consultants for U.S. and foreign governments and private industry, as teachers, or in new fields such as ecological medicine and epidemiology, environmental design and planning, and conservation biology. Because organismal biology spans such a wide variety of topics, this major has been designed to provide the basic fundamentals while allowing maximum flexibility within the general topic areas


Degree Check (PDF format)

Sample Plan (PDF format)


Important things you should know....

Entered UCSD as a Freshman

Entered UCSD as a Transfer


Ecology, Behavior & Evolution Major Requirements

Lower-Division Requirements

BILD 1 & 2 or BILD 1 & 3

Mathematics 10A, B, C/11 or 20A, B, C
Chemistry 6A, B, C  Laboratories in Chemistry are not required.
Physics 1A/1AL, 1B/1BL, 1C/1CL or 2A, B, C

Upper-Division Requirements

1. Genetics (BICD 100)

2. Biometry (BIEB 100). This course is a prerequisite for several core courses in EBE and should be taken in the first or second year.

3. Metabolic Biochemistry (BIBC 102) Please note that organic chemistry (Chemistry 140A and 140B) is a prerequisite for biochemistry. These prerequisite courses may be applied as elective courses under requirement number five listed below.

4. Seven EBE core courses to be chosen from BIEB 102 to 179 are required. At least two of these courses must be laboratory or field courses (BIEB 121, 131, 165, 167, and/or 179). Laboratory courses may be taken concurrently with the prerequisite lecture course if Biometry (BIEB 100) has been taken. Note that some of the laboratory courses may not be offered every year. For that reason, it is recommended that students take as many required courses as possible when the courses are offered.

5. Four additional upper-division courses (each course must be at least four units) taken through the UCSD Division of Biological Sciences, or related departments are required. Courses to be completed outside of the UCSD Division of Biological Science must be petitioned (prior to commencement of the course) to satisfy this requirement. Transfer courses are considered to be outside of the division. Students participating in the Education Abroad Program should refer to the biology section of that topic or contact the undergraduate advisor. Courses outside the Division of Biological Science that are particularly appropriate and that have been approved in the past include: Chemistry 122, and 149A, Math. 111A-B-C, 180A-B-C, and 181A-B-C; Biological Anthropology (most courses); and Earth Sciences (most courses); Economics 131; Scripps Institute of Oceanography (consent of instructor required). Only one quarter of BISP 196, 197 or 199 and/or one quarter of BISP 195 may be used to fulfill this requirement. Subsequent quarters of 195, 196, 197 or 199 may be applied toward college and university requirements.

* For more information on BISP 196 (Honors Thesis) or 199 (Independent Research) click here

* For more information on BISP 197 (Biotechnology Internship) click here


For further information, please contact Biology Student Affairs or check out the UCSD Catalog!

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