Students may petition to substitute the lab course with equivalent knowledge and units obtained through independent research experience (such as 199 or H196 research), as determined by the Head Faculty Advisor of their major emphasis. Careful consideration and discussion with your faculty advisor is important when making the decision whether to use independent research to substitute the lab, as MCB labs expose students to many biological approaches not always encountered during these research projects.
In order to obtain a substitution, you need to demonstrate that you understand the majority of the material taught in the MCB lab course, preferably by hands-on experience. This will be determined by your PI, the instructor of the lab course and the head faculty advisor in your emphasis. You must fulfill the requirements for the lab required in your emphasis (e.g. If you are a Neurobiology student, but only fulfill the immunology lab requirements, you cannot use this to substitute MCB 160L.)
Students have a limit of 2 substitutions for required major courses. This includes lab substitutions, electives, core requirements, study abroad, and upper division transfer classes. To request a course substitution, meet with a staff advisor who will provide you with a substitution form. All substitutions must be approved by a faculty advisor.
General Requirements
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A minimum of 2 academic terms (Fall, Spring, and/or Summer terms) of enrolled upper division research units (such as MCB 199, H196A, UGIS 192C etc) in the same laboratory. The second academic term of enrolled research units must be completed prior to or actively in-progress during the academic term in which the student submits their justification statement (see Procedure, Step 3, below).
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The total number of upper division research units must add up to a minimum of 4, completed prior to or actively in-progress during the academic term in which the student submits their justification statement (see Procedure, Step 3, below).
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Students must show documentation of the lab technique training received to the faculty advisor who will evaluate your petition (Procedures, Step 4, below). This is most commonly a written or digital lab notebook documenting the lab technique training via laboratory research/activities that the student has performed.
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Must be able to provide a coherent description of your research.
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Recommended: Participation and presentation in lab group meetings and journal clubs, which should develop your ability to understand and explain your research.
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Procedure
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Review the general (above) and emphasis-specific requirements (linked here: BBS, CDP, GGED, IMM, NEU).
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MTX students, use the BBS emphasis requirements for MCB C110L until we publish guidelines for the new MCB 120L lab course.
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Write a Justification Statement (see details below).
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Email your justification statement to the MCB Undergraduate Affairs Office (UAO; mcbuao@berkeley.edu) before the deadline (see deadlines below) and they will verify your eligibility and email you the lab substitution petition form and your major progress report.
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Have your petition form signed by your PI and the head faculty advisor in your emphasis. You should bring your lab notebook (or other appropriate documentation as explained in Step 3 of the General Requirements above) and be prepared to discuss how your lab experience fulfills the listed requirements.
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Your PI must sign the form before the head faculty advisor signs it.
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Return the signed lab sub petition form to the UAO via email (mcbuao@berkeley.edu). See the deadlines below.
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Write and submit a final research report (see details below) and submit a signed approval form. The online submission form for these documents will be provided to students via email when they receive their unsigned lab sub petition form (Step 3 above). Research Reports are due: Friday of RRR week of graduating semester (for Fall and Spring graduates) and the final day of Session C (for Summer graduates). In the event of technical difficulties with the online submission form or if a student is unable to locate the link to the submission form, a student can as a last resort submit these documents via email (to mcbuao@berkeley.edu) with an explanation for why they didn't use the standard online submission form (this helps us troubleshoot any technical problems, if applicable).
Deadlines
Signed lab substitution request form:
For seniors graduating in spring or summer:
- October 1 - Justification Statement due to MCB UAO
- October 31 - Lab substitution request form signed by your PI and head faculty advisor of your emphasis due to UAO
For seniors graduating in the fall:
- April 1 - Justification Statement due to MCB UAO
- April 30 - Lab substitution request form signed by your PI and head faculty advisor of your emphasis due to UAO
Research Report: Friday of RRR week of your graduating semester (submit to google form that we will email to you)
Justification Statement:
Send us a pdf file format version of your Justification Statement.
Parameters: Should be 1-3 pages in lenth; include the following file name structure and statement sections:
- File name of the pdf document should be: Surname or FamilyName,PersonalName_SIDNumber_MCB Lab Sub Justification CurrentSemesterCode. Semester code examples include Fa24 for Fall 2024, Sp25 for Spring 2025, and Su25 for Summer 2025. Example file name: Smith,Chris_0123456789_MCB Lab Sub Justification Sp26 would be a correctly structured file name ffor a justification statement submitted during the Spring 2026 semester for a hypothetical student named Chris Smith with generic SID number 0123456789. Pay attention to the intentional lack of underscore characters after "MCB" in the file name.
- Your name and student ID number should be written at the top, right side, of the document.
- Title the document at the top of the page, center-aligned, "MCB Lab Substitution Justification Statement" and make it in bold font.
- Immediately below the document title, please provide a title for the project that you have been working on, in this format: "Project Title: ___________" and make it in bold font.
- Include a section in the statement titled, "Goals of the Research" and describe appropriately.
- Include a section in the statement titled, "My Role in the Project" (include a description of the mentorship structure and list other researchers involved in the work and their roles).
- Include a section in the statement titled, "Specific Approaches and Methods Being Used" (include references to specific requirements for the laboratory course being replaced by this project).
- Include a section in the statement titled, "Results to Date" and describe appropriately.
- Include a section in the statement titled, "Future Plans/Research Outline for Next Semester" and explain as appropriate for your situation. Some students will need to continue their training into their graduating academic term while others might not need to, depending on their progress towards the required technique training at the time of the petition.
- Finish the justification statement with a section titled, "Presentation of the Work" and describe whether you have presented or plan to present your work at lab meetings or other meetings/conferences.
Final Research Report:
Due Friday of RRR week in your graduating academic term (Fall and Spring terms). Due by the last day of the Summer term if graduating in a Summer.
- A concise final scientific report describing the research performed, which should demonstrate the student’s ability to analyze and discuss their research in writing.
- For H196B students, the thesis satisfies this requirement. Submitting the honors thesis approval form completes this requirement.
- For other students, a research report must be submitted with an accompanying approval form signed by the research PI. The Research Report should normally be 3-5 single-spaced pages; extra pages are allowed for figures and tables. Review the MCB Honors thesis guidelines for additional help, although non-honors students are not expected to provide a report of longer length as expected for an Honors thesis.
BBS: MCB c110L Substitution Requirements
Experience with the following:
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DNA and/or RNA isolation and manipulation, Polymerase Chain Reaction (PCR) and reverse-transcription-PCR (RT-PCR), agarose gel electrophoresis, DNA cloning (restriction, ligation, transformation of yeast and/or bacteria)
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Protein expression and purification, subcellular fractionation, protein gel electrophoresis (SDS-PAGE), immunoblotting, protein assays, enzyme assays and kinetic analyses, protein crystallization and X-ray crystallography (very basic), protein structure-function analyses
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Fluorescence microscopy with living and fixed cells, subcellular protein localization analyses, and/or an alternative microscopy methodology; genetic manipulation and phenotypic testing.
CDP: MCB 133L Substitution Requirements
Experience with the following:
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Cell culture or cell manipulation, such as transfection, drug treatment, and immuno-fluorescence
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Microscopy – ideally fluorescence microscopy and a contrast enhancement technique, such as phase contrast or DIC optics
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Molecular biology, such as DNA cloning/manipulation, PCR
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Biochemistry – such as SDS-PAGE, subcellular fractionation, or Western blot
GGED: MCB 140L Substitution Requirements
Experience with the following:
- Reverse or forward genetic manipulation, such as RNAi, antisense-oligomer mediated gene knockdown, chemical genetics, chemical or transposon-mediated genetic screens, transgenesis, breeding experiments, genetic mapping. Experience with a genetic model system (yeast, mouse, corn, zebrafish, Arabidopsis, Drosophila, C. elegans, Xenopus tropicalis, etc.) is desired but not required. Experience with genome resources and databases preferred.
- Phenotypic analysis, such as in situ hybridization, immunohistochemistry, microscopic imaging, cell growth analyses, behavioral testing, etc.
- Molecular biology/biochemistry, such as DNA cloning/manipulation, PCR, protein isolation, SDS-PAGE, subcellular fractionation, or Western blot.
IMM: MCB 150L Substitution Requirements
Experience with the following:
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Cell culture or mouse experiments. Growing and maintaining animal or plant cells along with cell culture assays. Doing experiments in mice with immunizations or infections followed by tissue harvesting.
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Immunoassays. ELISAs, Western blot, immunohistochemistry, flow cytometry, microscopic imaging, immunoaffinity columns.
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Molecular biology/biochemistry, such as DNA cloning/manipulation, PCR, protein isolation, Southern blotting, restriction mapping, HPLC, DNA sequencing.
NEU: NEU 171L/173L (formerly MCB 160L/163L) Substitution Requirements
Experience with at least 4 of the following:
- Physiological or optical measurement of neural activity or signaling, including intracellular or extracellular recording, and activity- or calcium-based indicators
- Morphological analysis of neurons, circuits, or subcellular compartments, including immunohistochemistry, tract tracing, optical analysis of structure or dynamics using genetic or synthetic indicators
- Genetic manipulation or profiling of cells (e.g., viral vectors, RNAi), or reverse or forward genetics related to neurobiology
- Application of molecular biology and biochemistry techniques to understand neural functions (e.g., PCR, western blotting, immunoprecipitation, gene cloning)
- Quantitative analysis of animal behavior
- Computational approaches to neurobiology (neurons, genes, neural networks)