A-Z Index

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