Journal of Genetics

, Volume 48, Issue 3, pp 277–284 | Cite as

The theory of a cline

  • J. B. S. Haldane
Article

Summary

Where one phenotype is favoured in one area and another phenotype in a neighbouring area, the character in question may be expected to show a cline in the neighbourhood of the boundary. On certain assumptions the relation between the intensity of selection, the mean distance migrated per generation, and the slope of the cline can be calculated. The relation is used for a provisional calculation of intensities of selection in a population ofPeromyscus polionotus. These have the very low value of about 0.1%.

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References

  1. Blair, W. F. (1940). A study of prairie deermouse populations in southern Michigan.Amer. Midl. Nat. 24, 273.CrossRefGoogle Scholar
  2. Blair, W. F. (1944). Inheritance of the white cheek character in mice of the genusPeromyscus. Contr. Lab. Vert. Biol. Univ. Mich. 25.Google Scholar
  3. Fisher, R. A. (1939). Selective forces in wild populations ofParatettix texanus.Ann. Eugen., Lond.,9, 109.Google Scholar
  4. Huxley, J. S. (1939). Clines: an auxiliary method in taxonomy.Bijdr. Diirk. 27, 491.Google Scholar
  5. Huxley, J. S. (1942).Evobution. The Modern Synthesis. London.Google Scholar
  6. Southern, H. N. (1943).The Two Phases of Stercorarius parasiticusLinnaeus, pp. 443–85.Google Scholar
  7. Sumner, F. B. (1929a). The analysis of a concrete case of intergradation between two subspecies.Proc. Nat. Acad. Sci., Wash.,15, 110.CrossRefGoogle Scholar
  8. Sumner, F. B. (1929b). The analysis of a concrete case of intergradation between two subspecies. II. Additional data and interpretations.Proc. Nat. Acad. Sci., Wash.,15, 481.CrossRefGoogle Scholar
  9. Sumner, F. B. (1932). Genetic, distributional, and evolutionary studies of the subspecies of deermice (Peromyscus).Bibl. Genet. 9, 1.Google Scholar

Copyright information

© Indian Academy of Sciences 1948

Authors and Affiliations

  • J. B. S. Haldane

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