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MCD BIO 138 · Lec 1

Developmental Biology

Fall 2026Chen, J.5 units

Seats, time, final and grades

Seats

Closed.

162 of 162 · 12 over enrolled, lecture and all discussions summed.

Meets

TR 2:00pm-3:15pm

Lecture only. You also attend a discussion, listed below.

Final

Mon 7 Dec, 8:00am to 11:00am

One exam for the whole class, Los Angeles time.

Read 32 hours ago.

Grades

3.93
predicted, this instructor · 685 grades

685 letter grades, Chen, J..

Read 2 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

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Before you can enroll

Tell dibs what you have already taken and this line will say which of these you have. Your list.

From the registrar limited on both passes

Enrollment is limited to departmental majors during the priority, first, and second enrollment passes. Microbiology, Immunology, and Molecular Genetics majors meeting the requisites may enroll beginning July 1, 2026 at 8 a.m., space permitting. Any student meeting the requisites may enroll beginning July1, 2026 at 3 p.m., space permitting.

The limit applies on both enrollment passes, so there is no later pass to wait for.

Restrictions read 32 hours ago.

Discussions

You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.

9 discussions, none open. There is no waitlist either, so the only way in is somebody dropping the lecture.

No discussion is open. Whatever the lecture reads, there is currently nothing here to enroll in.
  • Dis 1A

    T 4:00pm-4:50pm

    Karasurmeli, N.

    Closed.

  • Dis 1B

    T 5:00pm-5:50pm

    Karasurmeli, N.

    Closed.

  • Dis 1C

    T 6:00pm-6:50pm

    Nguyen, J.

    Closed.

  • Dis 1D

    W 10:00am-10:50am

    Kasparian, A.

    Closed.

  • Dis 1E

    W 11:00am-11:50am

    Kasparian, A.

    Closed.

  • Dis 1F

    W 12:00pm-12:50pm

    Kasparian, A.

    Closed.

  • Dis 1G

    R 8:00am-8:50am

    Nguyen, J.

    Closed.

  • Dis 1H

    R 9:00am-9:50am

    Nguyen, J.

    Closed.

  • Dis 1I

    R 10:00am-10:50am

    Karasurmeli, N.

    Closed.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: TR 2:00pm-3:15pm

Physics and Astronomy Building 1425

Grades

3.93
predicted, this instructor · 685 grades

Of the 4 other people in the grade record for MCD BIO 138, the 2 with the most grades: RIGUEUR, DIANA at 3.95 over 438 grades and HARTENSTEIN, VOLKER at 3.32 over 351 grades.

A range
95%
P/NP
-
letter grade only
D/F/W
0.0%

Full grade history for MCD BIO 138

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

Workload, very light. 4.3 of 5 for Jau-Nian Chen, where 5 is lightest. Read 30 days ago.

dibs has read this course’s reviews and none of them say what kind of work it sets, so dibs has nothing to show rather than a guess. Read from 116 reviews 26 days ago. That is the reviewers being silent, and not a course that sets no work.

MCD BIO 138 reviews for Jau-Nian Chen Reviews for all professors of MCD BIO 138

Will it still be here

high risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 14321F
  • 12622W
  • 12022S
  • 13922F
  • 8623W
  • 8623S
  • 14823F
  • 13924W
  • 13824S
  • 15924F
  • 14025W
  • 10625S
  • 17225F
Enrollment by term: 21F 143, 22W 126, 22S 120, 22F 139, 23W 86, 23S 86, 23F 148, 24W 139, 24S 138, 24F 159, 25W 140, 25S 106, 25F 172

Peak 172 · most recent 25F at 172

Seats over time

Nothing read since 2 Oct, 2 hours ago. Over about 2 months before that, same seat count, but the status moved and came back and the waitlist moved and came back.

162 of 162 · no seats left in its discussions

All 25 readings say 162 of 162.

17 Aug 15:079 Sep 09:222 Oct 03:37 · 2 hours ago
dibs read 168 of the 543 hours its hourly record covers, 31%, and did not look in 375. dibs had no hourly record before 9 Sep, which is the other 550 of 1093 plotted.162 of 162 enrolled at the newest reading, 2 hours ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 2 Oct 03:37, 162 to 162. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 543 hours its hourly record here covers, 31%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 375 hours dibs was keeping a record and did not reach this section. Nothing before 9 September at 13:00, where this section's record starts, has a read either way, which is 550 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading. Recorded enrollment counts match, so the line is flat across the whole window: it says when dibs looked rather than what changed. The last dot is the last time dibs read this section, moved or not, and that was 2 hours ago. It is the last thing dibs saw, not where the count is now.

Show the readings (25)
Recorded Enrolled Capacity Status Waitlist Hours read
2 Oct 03:37 162 162 closed - 5 of 12
1 Oct 16:12 162 162 closed - 6 of 15
1 Oct 02:22 162 162 waitlist 12 of 18 2 of 4
30 Sep 23:12 162 162 waitlist 13 of 18 2 of 4
30 Sep 20:32 162 162 waitlist 16 of 18 2 of 4
30 Sep 17:22 162 162 waitlist 15 of 18 2 of 5
30 Sep 13:52 162 162 waitlist 13 of 18 2 of 4
30 Sep 10:22 162 162 waitlist 15 of 18 3 of 7
30 Sep 04:12 162 162 waitlist 16 of 18 11 of 37
28 Sep 16:32 162 162 closed 18 of 18 2 of 4
28 Sep 13:02 162 162 waitlist 16 of 18 4 of 12
28 Sep 02:22 162 162 closed 18 of 18 2 of 4
27 Sep 23:12 162 162 waitlist 16 of 18 2 of 5
27 Sep 19:42 162 162 closed 18 of 18 2 of 4
27 Sep 16:52 162 162 waitlist 16 of 18 7 of 21
26 Sep 20:02 162 162 waitlist 15 of 18 9 of 29
25 Sep 16:32 162 162 waitlist 17 of 18 3 of 7
25 Sep 10:02 162 162 closed 18 of 18 3 of 8
25 Sep 03:42 162 162 waitlist 16 of 18 3 of 8
24 Sep 20:32 162 162 waitlist 17 of 18 11 of 37
23 Sep 08:52 162 162 closed 18 of 18 2 of 3
23 Sep 06:12 162 162 waitlist 17 of 18 4 of 12
22 Sep 19:42 162 162 closed 18 of 18 2 of 4
22 Sep 16:42 162 162 waitlist 17 of 18 100 of 866, 550 no hourly record
17 Aug 15:07 162 162 closed 18 of 18 -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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