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XIV.—On the Quantitative Relation of Comb Size and Gonadic Activity in the Fowl

Published online by Cambridge University Press:  15 September 2014

A. W. Greenwood  and
F. A. E. Crew
A. W. Greenwood
Affiliation:
Animal Breeding Research Department, University of Edinburgh
F. A. E. Crew
Affiliation:
Animal Breeding Research Department, University of Edinburgh
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Summary

The law of “all-or-nothing” does not hold in the case of comb volume. The comb volume in the two individuals described remained intermediate in size.

The degree of development of head furnishings is dependent not upon the amount but on the state of the gonadic tissue. It appears to be related to the spermatogenic activity of the testicular fragment.

Type
Proceedings
Information
Proceedings of the Royal Society of Edinburgh , Volume 47 , 1928 , pp. 190 - 197
Copyright
Copyright © Royal Society of Edinburgh 1928

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References

REFERENCES

Greenwood, A. W., and Crew, F. A. E. 1927, Proc. Roy. Soc., B.Google Scholar
Pézard, A. (1922). “La loi du ‘tout ou rien’ et le gynandromorphisme chez les oiseaux,” Jour. d. physiol. path, gén., 20, 200–211.Google Scholar
Shattock, S., and Seligman, C. G., 1904. “Observations upon the Acquirement of Secondary Sexual Characters, indicating the Formation of an Internal Secretion by the Testicle,” Proc. Roy. Soc., B, 73, 49–58.Google Scholar