MCD Biology Undergraduate Advising

Welcome to Molecular, Cell & Developmental (MCD) Biology Undergraduate Advising!

Click one of the links below to be directed to that page:

Important Announcements

Full/Closed Class - What Should I Do? 

Always prioritize qualification courses or the Upper Division Core Courses (BIOL 100BIOL 101, or BIOL 105) during first pass enrollment. We usually hold some seats in courses until after second pass enrollment, so don’t assume that a class is full or closed just because it has a waitlist.


The ONLY WAY to request a seat in a course that is FULL is to get on a waitlist during second pass enrollment. A spot on the waitlist does not guarantee a spot in the class, so make sure you have a back up plan. 

If you are not able to enroll or waitlist during your Second Pass enrollment appointmentsit may be because:

  1. You are missing a prerequisite
  2. You have an enrollment hold (check your portal for details)
  3. You have exceeded the number of units you are allowed to enroll in or waitlist

If you were unable to waitlist or add a class from your portal, you can complete the Enrollment Request Sign In Sheet for Spring 2024 about 2 weeks before the First Day of InstructionMonday, March 18, 2024 at 8am!

*Note: The Enrollment Request Sign In Sheet does not override holds or prerequisites

The reason we are waiting until 2 weeks before the first day of class to open the form is because many enrollment problems/challenges that students are encountering right now will be resolved well in advance of the first day of class or they may decide that they are no longer interested in taking the class. 

Please remember that the MCD Biology Department strictly enforces course prerequisites - the Enrollment Request Sheet does not override course prerequisites.


Spring 2024 Enrollment Guide

The MCD Biology Departments Undergraduate Enrollment Guide has been posted to our Enrollment Webpage as well as sent out to students via Slug Success Message. 

Please check out our Enrollment Guide for MCD Biology Department specific information regarding Spring 2024 Enrollment.

Winter 2024 Important Dates

Important Dates to note for Winter 2024 (Most dates on the Registrar's Academic and Administrative Calendar):

  • November 15th to November 21, 2023: First Pass Appointments
    • Credit Limits:
      • Senior Standing: 19-credit limit
      • Junior, Sophomore, and Frosh Standing: 14-credit limit
    • Appointments every half hour - 9:00 a.m.-4:00 p.m.
    • First-pass enrollment remains open from your assigned enrollment appointment opens until 11:59 p.m. on 11/21
  • November 28th to December 1st, 2023: Second Pass Appointments and Waitlist
    • Credit limits: 
      • Enrolled: 19-credit limit
      • Waitlist: 14-credit limit
      • Appointments every half hour - 11:00 a.m.-4:00 p.m.
  • December 2nd, 2023: Winter 2024 Open Enrollment
    • Credit limit: 19 units 
  • January 2nd, 2024: Minimum Credit Limit Enforced (12 units for Undergraduate Students)
  • January 8th, 2024: Instruction Begins for the Winter 2024 quarter
    • Deadines:
      • Withdraw from the quarter and receive full registration fees refund
  • January 10th, 2024: Undergraduate Enrollment Deadline (Must be enrolled in at least 1 course)
  • January 18th, 2024: Permission Number Required to Enroll in any class
  • January 29th, 2024: ADD/DROP/SWAP Deadline
    • Undergraduate Part-Time Program Deadline
  • January 30th, 2024: Late Add by Permission Begins ($10 fee)
  • February 5th, 2023: MCD Biology Winter 2024 Appeal Deadline
  • February 9th, 2024: Declaration Deadline
    • Deadline for Fall 2023 Transfer Students
  • March 18th to March 22nd, 2024: Finals Week


MCD Biology Student Opportunities Email Google Group

Join our Student Opportunities Email Google Group: MCDB FWD Opportunities!

NOTE: You will need to be logged into your UCSC email account.

This email list will be forwarded opportunities shared with MCD Biology Advising from: other departments at UCSC, California state graduate schools, job, scholarship, research, training, volunteer & internship opportunities. You can unsubscribe at any time.


How to Access MCD Biology Advising

Please see our How to Contact MCD Biology Advising page for more information on MCD Biology Undergraduate Advising options.

Know what type of advising you are looking for? Check out the specific advising pages below for availability:


MCD Biology Staff
MCD Biology Advisors:





MCD Biology Faculty Advisor:

John Tamkun
MCD Biology Curriculum Chair:

John Tamkun

MCD Biology Department Chair:

William Sullivan

MCD Biology Department Manager:

Teel Lopez