Hostname: page-component-669899f699-chc8l Total loading time: 0 Render date: 2025-04-29T17:29:56.956Z Has data issue: false hasContentIssue false
  • English
  • Français

Rose comb: an example of operational over-dominance in the domestic fowl*

Published online by Cambridge University Press:  14 April 2009

Thomas W. Fox ,
Roy D. Crawford  and
J. Robert Smyth Jr
Thomas W. Fox
Affiliation:
University of Massachusetts, Amherst, Mass., U.S.A.
Roy D. Crawford
Affiliation:
University of Massachusetts, Amherst, Mass., U.S.A.
J. Robert Smyth Jr
Affiliation:
University of Massachusetts, Amherst, Mass., U.S.A.
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The pleiotropic effect of the rose-comb gene (R) on fertility when combined with artificial selection against the single-comb type (r) results in an interesting example of operational over-dominance. An evaluation of the equilibrium frequency of the rose-comb gene based on this over-dominance concept provides a plausible explanation for the relatively high frequency of single-comb birds appearing in the Wyandotte breed of fowls.

Type
Research Article
Information
Genetics Research , Volume 5 , Issue 3 , November 1964 , pp. 379 - 383
Copyright
Copyright © Cambridge University Press 1964

References

REFERENCES

Allison, A. C. (1954). Notes on sickle-cell polymorphism. Ann. Hum. Genet. 19, 39–57.CrossRefGoogle ScholarPubMed
Bateson, W. (1902). Experiments with poultry. Rep. Evolut. Comm. roy. Soc. 1, 87–124.Google Scholar
Cochez, L. P. (1951). An infertility factor balanced by breeding in White Wyandottes. Proc. IXth World's Poultry Cong. 1, 122–128.Google Scholar
Crawford, R. D. & Merritt, E. S. (1963). The relationship between rose comb and reproduction in the domestic fowl. Can. J. Genet. Cytol. 5, 89–95.Google Scholar
Crawford, R. D. & Smyth, J. R. Jr., (1964 a). Studies of the relationship between fertility and the gene for rose comb in the domestic fowl. 1. The relationship between comb genotype and fertility. Poultry Sci. (in press).Google Scholar
Crawford, R. D. & Smyth, J. R. Jr., (1964 b). Studies of the relationship between fertility and the gene for rose comb in the domestic fowl. 2. The relationship between comb genotype and duration of fertility. Poultry Sci. (in press).Google Scholar
Crawford, R. D. & Smyth, J. R. Jr,. (1964 c). Infertility and action of the gene for rose comb in the domestic fowl. Can. J. Genet. Cytol. (in press).CrossRefGoogle Scholar
Crawford, R. D. & Smyth, J. R. Jr,. (1964 d). The influence of comb genotype on mating behaviour in the domestic fowl. Poultry Sci. (in press).Google Scholar
Falconer, D. S. (1960). Introduction to Quantitative Genetics. New York: Ronald Press, Inc.Google Scholar
Fredeen, H. T. (1963). Personal communication, Experimental Farm, Lacombe, Alberta.Google Scholar
Gyles, N. R. (1964). Personal communication, University of Arkansas, Fayetteville, Arkansas.Google Scholar
Hutt, F. B. (1940). A relation between breed characteristics and poor reproduction in White Wyandotte fowls. Amer. Nat. 74, 148–156.Google Scholar
Hutt, F. B. (1949). Genetics of the Fowl. New York: McGraw-Hill Book Co., Inc.Google Scholar
King, J. W. B. (1955). Observations on the mutant ‘pygmy’ in the house mouse. J. Genet. 53, 487–497.Google Scholar
Munro, S. S. (1946). Relative influence of heredity and environment on fertility and hatchability in Wyandottes. Emp. J. exp. Agric. 14, 25–30.Google Scholar
Ponsignon, M. (1951). The comb problem in White Wyandottes. Proc. IXth World's Poultry Cong. 1, 70–76.Google Scholar
Wright, S. (1931). Evolution in Mendelian populations. Genetics, 16, 97–159.CrossRefGoogle ScholarPubMed