This website is best viewed in a browser that supports web standards.

Skip to content or, if you would rather, Skip to navigation.

Northwest Missouri State University

Gretchen Thornsberry

Gretchen Thornsberry



1410 CI


660.562.1188 (fax)

Joined Northwest in 2009

Associate Professor


  • Ph.D. Genetics, North Carolina State University, 2003
  • B.S. Biology, College of Charleston, 1995

Courses Taught

  • General Biology
  • General Biology Lab
  • Biological Science Seminar
  • Cell Biology
  • General Microbiology
  • Molecular Biology
  • Nanoscale Science II
  • Principles of Biology
  • University Seminar

Academic Interests

  • Adapting molecular biology experiments for introduction into freshman level biology courses
  • Biofilm formation in Staphylococcus and  Streptococcus
  • Women in STEM

Scholarly Activity

  • Geiger-Thornsberry, G L. 2016. How does oral hygiene effect bacterial counts in saliva? American Biology Teacher. 78(3):258-260.
  • Geiger-Thornsberry, G L  and TFC Mackay.  2004. Quantitative trait loci affecting natural variation in Drosophila longevity.  Mechanisms of Ageing and Development  125: 179-189.
  • De Luca, M,  NV Roshina, GL Geiger-Thornsberry, RF Lyman, EG  Pasyukova, and TFC Mackay.   2003. Dopa-decarboxylase affects variation in Drosophila longevity. Nature Genetics 34: 429-433.
  • Geiger-Thornsberry, G L  and T FC Mackay.  2002.  Association of single nucleotide polymorphisms at the Delta locus with genotype-environment interaction for sensory bristle number in Drosophila melanogaster.  Genetical Research  78(6):211-218.

Student Group Advisement

  • Faculty Advisor for Northwest's Pre-Health Occupation Club

Other Professional Experiences

  • Former Science Instructor for Upward Bound 
  • CITE fellowship to develop an online graduate level molecular biology course
  • Secretary for the Missouri Branch of the American Society for Microbiology
  • Abstract reviewer for Annual Biomedical Research Conference for Minority Students
  • Director of Region I-B Science Olympiad