University of Arizona
Degree Search Header

Ecology & Evolutionary Biology

« Back to all degrees

Ecology & Evolutionary Biology

Bachelor of Arts

Apply Now

The Ecology & Evolutionary Biology major focuses on the history, development, and interaction of Earth's organisms, including plants, animals, and single-celled life forms. Students in this major explore life's diversity in an integrative evolutionary framework, spanning genomes to ecosystems: they study species evolution, the effect of environmental pressures on evolution, patterns of biological diversity, and species interaction within a given ecosystem. The Bachelor of Arts degree is designed for students interested in natural history and the biological/environmental sciences - students who pursue this degree option may be interested in careers in environmental policy, conservation writing or journalism, or grant writing.

Major Details

College: College of Science
Admissions Requirements:

No Additional Requirements

Math Required:


    This strand involves skill and facility with calculus. The S-strand begins at one of two calculus options - MATH 124 (Calculus I with Applications) or MATH 125 (Calculus I). Students who successfully complete the S-strand may continue on to MATH 129 (Calculus II), MATH 223 (Vector Calculus), or beyond. Those who choose but are not ready to begin the S-strand will be required to take preparatory work.
Second Language Required:

4 Semesters

  • Scoring the equivalent of fourth-semester skill level on an entrance or placement examination administered by The University of Arizona.
  • Completion of a two-course sequence beyond the second semester of post-secondary language instruction.
  • Completion with a C or higher of a 300- or 400-level language course at the post-secondary level.
  • Completion of one course beyond the third semester in combination with an AP (Advanced Placement) score, IB (International Baccalaureate) score or a CLEP (College Level Entrance Program) score determined by the individual language department.
  • An AP, IB, or CLEP language score determined by individual language departments.
  • A minimum of one semester study abroad in a language program approved by the appropriate language department as the equivalent of fourth-semester skill level.
4 Semesters
Fees: No
Pre-Major: No

Four-Year Plan

Archived plans are available on Degree Search 2011-2017 for many degree plans. These are sample plans. Please work with your academic advisor for more specific and up-to-date requirements.

Select a year:

UA Course Requirements Units
1st Semester
MATH 122A Functions for Calculus 1
MATH 122B First-Semester Calculus 4
CHEM 151 General Chemistry 4
ENGL 101 First-Year Composition 3
Second Language (101) 4
2nd Semester
CHEM 152 General Chemistry II 4
ECOL 182R Intro Biology II 3
ECOL 182L Intro Lab II 1
ENGL 102 First-Year Composition II 3
Second Language (102) 4
3rd Semester
MCB 181R Intro Biology 3
MCB 181L Intro Lab I 1
PHYS 102 Intro Physics I 3
Second Language (201) 4
Tier I General Education 3
4th Semester
200 level ECOL course 3
PHYS 103 Intro Physics II 3
Major elective (Ecology, Evolution & Behavior) 4
Second Language (202) 4
Tier I General Education 3
5th Semester
ECOL 320 Genetics 4
Major elective (Biology of Organisms) 4
Tier I General Education 3
Tier I General Education 3
Elective or minor course 3
6th Semester
ECOL 335 Evolutionary Biology 4
Major elective (Biology of Organisms) 4
Tier II General Education 3
Elective or minor course 3
7th Semester
Major elective (Ecology, Evolution & Behavior) 4
MATH 263 Intro to Statistics and Biostatistics 3
Tier II General Education 3
Elective or minor course 3
8th Semester
Tier II General Education 3
Elective or minor course 3
Elective or minor course 3
Elective or minor course 3

AZ Transfer Pathways

This page is designed for in-state transfer students who plan to attend the University of Arizona. The information presented lists the most accurate course equivalencies and may not include all possible requirements. Transfer students are strongly encouraged to use this site for reference only and not for self-advising.

Transfer students should work with their community colleges and UA advisors to develop an individualized plan for transfer, and visit

  • All posted Pathways (except for Bachelor of Applied Science Pathways) fulfill an AGEC and most also fulfill an Associate Degree
  • Following a Pathway does not guarantee admission to the UA nor admission to a college/major/program at the UA
  • Use Pathways in consultation with advisors from your community college and the UA
  • Pathways are subject to change at any time

Which college/university do you attend?