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About Kathleen Tweeten, PhD

Kay Tweeten is a professor of biology at St. Catherine University. Her courses in molecular biology, cell biology, and immunology feature problem-based learning, case studies, and student-designed research projects. She has collaborated with numerous students in her research laboratory on cellular and molecular analysis of regeneration, degrowth, sexual reproduction, and ploidy levels in populations of the freshwater annelid, Lumbriculus. She involves students in experimental design, data collection and interpretation, and dissemination of results. The research environment provided allows students autonomy in their thinking and helps them explore their potentials as scientists. They learn the value of perseverance through frustrations that accompany experimentation, of doing research with integrity and thoroughness, and of embracing how mistakes may provide for progress. She has received Teaching Awards, the Myser Family Faculty Mentoring Award, and was Endowed Chair in the Sciences. She has expertise in collaborative research, mentoring, faculty development, and curriculum innovation.


Present Professor, Carondelet Scholar, St. Catherine University Biology Department

Curriculum Vitae


2018 - Present Acquisition of a widefield fluorescence microscopy system to grow research and training of women from diverse multicultural and economic backgrounds at St. Catherine University
National Science Foundation - 1827514
Major Research Instrumentation Grant
Role: co-investigator
Colleague(s): P Furey, A Kalis, T McDonald
2017 - 2017 Generation and Analysis of Transcriptomics Data from Sexually and Asexually Reproducing Forms of Lumbriculus
APDC St. Catherine University
Role: Principal Investigator
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Professional Service and Affiliations

2021 member and judge of student presentations, Society for Integrative and Comparative Biology
2017 - 2020 Chair, Department of Biology, St. Catherine University
2020 member and presentation jugde, American Microscopical Society
2020 member and presentation judge, Society for Integrative and Comparative Biology
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Honors and Awards

  • St. Catherine University. (2015). Myser Family Excellence in Faculty Mentoring Award
  • St. Catherine University. (2012–Present). Carondelet Scholar
  • Endowed Professor in the Sciences, 2003–2006
  • St. Catherine University. (2001). Myser Family Foundation Teaching Excellence Award
  • St. Catherine University. (1995). Faculty Teaching Award


  • Introduction to Microbiology
  • Foundations in Biology II
  • Senior Seminar
  • Immunology
  • Molecular Biology (topics vary semester to semester)
  • Cellular Biology (topics vary semester to semester)


1999 Certificate of Advanced Study, Health and Wellness Counseling, St. Catherine University
1977 Ph.D., Biochemical Virology, Kansas State University
1973 B.S., Bacteriology, North Dakota State University--Fargo

Contact Information


St. Catherine University
2004 Randolph Avenue
St. Paul, MN 55372


Publications (24)

Presentations (18)