Article ID: CBB094549170

Bivalent Selection and Graded Darwinian Individuality (2022)


Philosophers are approaching a consensus that biological individuality, including evolutionary individuality, comes in degrees. Graded evolutionary individuality presents a puzzle when juxtaposed with another widely embraced view: that evolutionary individuality follows from being a selectable member of a Darwinian population. Population membership is, on the orthodox view, a bivalent condition, so how can members of Darwinian populations vary in their degree of individuality? This article offers a solution to the puzzle, by locating difference in degree of evolutionary individuality at the level of population lineages, some of which are more Darwinian than others. In doing so, it sheds light on graded individuality in overlapping and nested population lineages, such as those that arise in multilevel selection and symbiotic collectives.

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Authors & Contributors
Waizbort, Ricardo
Martins, Lilian Al-Chueyer Pereira
Brzezinski Prestes, María Elice de
Stefano, Waldir
Browne, E. Janet
Lidgard, Scott
Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences
Biology and Philosophy
History and Philosophy of the Life Sciences
American Quarterly
Filosofia e História da Biologia
Science and Education
Fundo Mackenzie de Pesquisa
Atlantic Monthly Press
Harvard University Press
University of Cambridge (United Kingdom)
Cambridge University
Species concept (biology)
Natural selection
Darwin, Charles Robert
Mayr, Ernst
Senebier, Jean
Jennings, Herbert Spencer
Cope, Edward Drinker
Dobzhansky, Theodosius
Time Periods
19th century
20th century
20th century, late
20th century, early
18th century
Great Britain
United States
Southeast Asia
Johns Hopkins University (Baltimore, Md.)

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