Summary
Polymorphism may be due to the fact that the fitness of a phenotype diminishes as its numbers increase. The stability of the equilibrium is discussed, and it is shown that under natural conditions instability is unlikely.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02986302.
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Haldane, J.B.S., Jayakar, S.D. Polymorphism due to selection depending on the composition of a population. J Genet 58, 318–323 (1963). https://doi.org/10.1007/BF02986301
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DOI: https://doi.org/10.1007/BF02986301