West-Eberhard's mother was a primary school teacher, and her father, a small-town businessman, and as parents they encouraged her curiosity. She went to school in Plymouth Community Schools, Plymouth, Michigan. She recalls of her high school that the best scientific training "was an English course on critical reading and writing, taught by the school librarian. Biology class was just a workbook, an enormous disappointment for me."[8]
She did all her degrees at the University of Michigan. She did her bachelor's degree from University of Michigan in zoology in 1963. She earned her master's degree from the same place in zoology in 1964, and then her PhD (zoology) in 1967. There she was taught by Richard D. Alexander and had part-time employment in its Museum of Zoology. She records that "I also learned the excitement of being a sleuth in the university libraries where even an undergraduate could explore an idea beyond textbooks and could feel like a pioneer". She also corresponded with Edward Wilson on trophic eggs in insects, and spent summers at Woods Hole and Cali in Colombia.[8]
West-Eberhard has studied many species of social wasps such as Polistes fuscatus, Polistes canadensis, and Polistes erythrocephalus.[9] Through her studies she has investigated why wasps evolved from being casteless and nestsharing casteless to becoming highly specialized eusocial species using comparative studies of tropical wasps (Hymenoptera). She has argued that origins of nonreproductive females in social wasps involves mutualism rather than only kin selection or parental manipulation.[10]
Her work upon social insects has played an important role in the development of her ideas upon phenotypic plasticity.[11][12] As she notes "From there I got interested in alternative phenotypes—alternative pathways and decision points during development, and their significance for evolution, especially for higher levels of organization, for speciation, and for macroevolutionary change without speciation."[13]
West-Eberhard has written from the mid-1980s upon the role of "alternative phenotypes," such as polymorphisms, polyphenisms, and context sensitive phenotype life history and physiological traits.[14][15][16] This resulted in her 2003 book Developmental Plasticity and Evolution.[5]
She argues that such alternative phenotypes are important since they can lead to novel traits, and then to genetic divergence and so speciation. Through alternative phenotypes environmental induction can take the lead in genetic evolution. Her book Developmental Plasticity and Evolution developed in detail how such environmental plasticity plays a key role in understanding the genetic theory of evolution. Her argument is full of examples from butterflies to elephants.
As a member of the United States National Academy of Sciences, West-Eberhard has served for three terms on its Committee on Human Rights.[3][20] She has also been noted as "active in promoting the careers of young scientists, particularly those doing work in Latin America".[6]
1996. Wasp societies as microcosms for the study of development and evolution., pp. 290–317. In Natural history and evolution of paper wasps. (editors, West-Eberhard, M-J. & S. Turillazzi) Oxford University Press, Oxford. ISBN978-0-19-854947-5
2007. Are genes good markers of biological traitsArchived 2022-07-05 at the Wayback Machine? 175–193. In Biological Surveys. National Research Council Committee on Advances in Collecting and Utilizing Biological Indicators and Genetic Information in Social Science Surveys. Weinstein, M., Vaupel, J. W. and Wachter, K.W. (editors), National Academies Press, Washington.
^National Academy of Sciences Committee on Human Rights and Institute of Medicine Committee on Health and Human Rights. (1992). Scientists and Human Rights in Guatemala: Report of a Delegation. National Academy Press Washington, D.C. National Academy Press Washington, D.C.