Morris received a Bachelor of Arts from Earlham College and a PhD from Indiana University.[1] As a National Science Foundation postdoctoral fellow at the University of Texas at Austin, her work with Mike Ryan demonstrated equal fitnesses between alternative reproductive tactics in a species of swordtail fish.[2] She joined the faculty at Ohio University in 1997,[citation needed] where she is now a professor in the Department of Biological Sciences. She is also the Associate Editor for the journal Behavior. Her publication credits include multiple papers on Animal behavior and Ecology[3]. Her current research relates to diabetes, as well as behavioral ecology, using the swordtail fish Xiphophorus as a model organism.[4]
Morris, Molly R.; Nicoletto, Paul F.; Hesselman, Elizabeth (2003). "A polymorphism in female preference for a polymorphic male trait in the swordtail fish Xiphophorus cortezi". Animal Behaviour. 65 (1): 45–52. doi:10.1006/anbe.2002.2042. S2CID13334832.
Morris, Molly. R.; Friebertshauser, R. J.; Rios-Cardenas, Oscar; Liotta, M. N.; Abbott, Jessica K. (2016). "The potential for disruptive selection on growth rates across genetically influenced alternative reproductive tactics". Evolutionary Ecology. 30 (3): 519–533. doi:10.1007/s10682-016-9823-x. S2CID16340410.