Biology BS:  Major Requirements

View the printable major checklist (PDF) for the current academic year.

Letter Grade Policy: ALL courses for the major MUST be taken for a letter grade.  Only courses with grades of C (2.0) or better can be used to fulfill major requirements.  Courses in which you receive a grade of C-, D+, D, D- or F cannot be used to satisfy a major requirement or satisfy a prerequisite for another course.

Qualification Policy:  You must meet qualification policy criteria to be eligible to declare this major.


Calculus:  MATH 11A + 11B OR MATH 19A + 19B

Chemistry:  CHEM 1A + 1B + 1C/N

Biology:  BIOL 20A + BIOE 20B + BIOE 20C + BIOL 20L*
*Limited enrollment capacity for 2017-2018

Organic Chemistry:  CHEM 8A/L + 8B

Statistics:  AMS 5 OR 7/L

Physics:  PHYS 6A/L + 6B OR PHYS 6A/L + 6C OR 7A + 7B + 6L*

*Concurrent enrollment with PHYS 6L required
Note: PHYS 7A/B and 6L will not satisfy prerequisites for admission to most medical schools



Lab Requirement:  BIOL 101L and ONE additional upper-division lab or field course.

Biochemistry & Molecular Biology:  BIOL 100 + BIOL 101 OR BIOC 100ABC

NOTE: Students who complete BIOC 100ABC + BIOL 101L have met both the biochemistry and molecular biology requirements. In addition, BIOC 100C can be used to satisfy a general biology elective

Molecular Biology Lab: 101L (formerly 100K)

Genetics:  BIOL 105

Ecology:  BIOE 107

Evolution:  BIOE 109

Cell Biology:  BIOL 110

Electives:  THREE additional upper-division five or seven unit electives chosen from the following

BIOE 108 Marine Ecology
BIOE 112/L Ornithology
BIOE 114/L Herpetology
BIOE 117/L Systematic Botany of Flowering Plants
BIOE 120/L Marine Botany
BIOE 122/L Invertebrates
BIOE 124/L Mammalogy
BIOE 127/L Icthyology
BIOE 129/L Marine Mammals (lab optional)
BIOE 131/L Animal Physiology (lab optional)
BIOE 133/L Exercise Physiology
BIOE 134/L Comparative Vertebrate Anatomy
BIOE 135/L Plant Physiology
BIOE 137/L Molecular Ecology
BIOE 140 Behavioral Ecology
BIOE 145 Plant Ecology
BIOE 147 Community Ecology
BIOE 148A Quantitative Ecology I
BIOE 148B Quantitative Ecology II
BIOE 149 Disease Ecology
BIOE 155 Freshwater Ecology
BIOE 161 Kelp Forest Ecology
BIOE 163/L Ecology of Reefs, Mangroves & Seagrasses
BIOE 165 Marine Conservation Biology
BIOE 172/L Population Genetics
BIOL 111A Immunology I
BIOL 114 Cancer Cell Biology
BIOL 115 Eukaryotic Molecular Biology
BIOL 120 Developmental Biology
BIOL 125 Intro Neuroscience
BIOC 100C Biochemistry
BIOL 130 Human Physiology
METX 119 Microbiology
METX 135/L Anatomy of the Human Body


Satisfied by successful completion of two BIOE courses or one 5-credit BIOL lab chosen from the list of DC courses here. This requirement MUST be completed at UCSC. The Academic Advising Report may not reflect current DC requirements. Check-in with an MCD Biolgoy adviser about fullfilling this requirement. 

Satisfied by successful completition of any upper0division BIOE or BIOL lab course identified with an "L". Check for senior exit requirement.