Dr. Drew Sieg
Agricultural & Biological Sciences Chair and Associate Professor of Biology
Open Office Hours Via Zoom or in person (MG 3054)
Tuesday / Friday 9-11am
Other times by app't, send me an email!
Dr. Brett Berke
Associate Professor of Biology (2015)
Fall 2026 (Zoom and F2F; https://truman-edu.zoom.us/j/3226642392)
Mon 330-430
Tues 1-230
Wed 1030-1230
Fri 330-430
Appointments can also be scheduled upon request
Dr. Sarah Berke
Assistant Professor of Biology
Tuesday: 9:30 - 11:30 am
Wednesday: 1:30-3:30 pm
Friday: 10:30 am - 12:30 pm
Or by appointment
Ms. Emily Costello
Lecturer in Agricultural Science, Equestrian Show Team Coach
Fall 2026
My office hours are from 10:30-12:20 pm MF, 9:30-11:20am T, 9:30-1:20pm R, or by appointment. Office Hours can be done in person in MG 3078 or over zoom at ecostello2020
Dr. Maria Beatriz De Souza Cortez
Assistant Professor of Biology (2024)
Monday: 3:30pm - 5:30pm
Tuesday: 9:00am - 11:00am
Wednesday: 3:30pm - 5:30pm
Thursday: 11:30am - 1:30pm
Friday: 10:30am - 12:30pm
For Office Hours by appointment, please email me at mbscortez@truman.edu
Dr. Rachel Harman
Assistant Professor of Agroecology
TR 8:00 - 10:00, WF 1:30 - 2:30, or by appointment
Dr. Joanna Hubbard
Associate Professor of Biology
Fall 2026:
Tues / Thur: 1:00 pm – 3:00 pm & Fri: 10:30 am – 12:00 pm
By appointment: Book time with Hubbard, Joanna: Student/Office Hours
Dr. Bob Johnson
Associate Professor of Agricultural Science
MWF: 10:30 -12:20 or by appointment
Dr. John Ma
Professor of Biology (2005)
Fall 2026 Office hours:
Tue/Wed 12:30 pm – 2:30 pm; Thu 12:30 pm – 1:30 pm
Dr. Hajeewaka Mendis
Assistant Professor of Biology (2021)
Office hours:
M 3:30 PM - 4:30 PM
T 1:30 PM - 4:30 PM
W 3:30 PM - 4:30 PM
R 1:30 PM - 4:30 PM, 9:00 AM - 10:00 AM
F 9:00 AM - 10:00 AM
(MG3030)
Instr. Jeanne Mitchell
Instructor in Biology (1992)
Monday 9:30 - 10:20 and 11:30 - 12:20 and 1:30 to 2:20
Tuesday 1:30 to 2:20
Wednesday 9:30 - 10:20 and 11:30 - 12:20 and 1:30 to 2:20
Friday 9:30 - 10:20 and 11:30 - 12:20 and 1:30 to 2:20
or by appointment.
Zoom ID 614-047-3210 (zoom open by arrangement)
Dr. Chad Montgomery
Professor of Biology (2007)
Office Hours: M 9:30-12:20, W 11:30-2:20, T/TH 10:30-1:20
And by appointment
Dr. Joyce Patrick
Associate Professor of Biology (2015)
My Office Hours for Spring 2026 are:
Mondays 1:30-3:20 PM
Tuesdays 9:30-10:20 AM and 12:30-1:20 PM
Thursdays 9:30-10:20 AM
Fridays 10:30 AM-12:20 PM
Other hours available by appointment.
Dr. Anton Weisstein
Professor of Biology (2004)
For Fall 2026:
Tue: 10:00 a.m. – 11:30 a.m.
Wed: 1:30 p.m. – 2:30 p.m.
Thu: 11:30 a.m. – 1:30 p.m.
...or by appointment.
Appointments recommended, but drop-ins welcome.
