Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-23T01:10:02.345Z Has data issue: false hasContentIssue false
  • English
  • Français

Four new half-and-half mosaic fowls

Published online by Cambridge University Press:  14 April 2009

A. G. Cock
A. G. Cock
Affiliation:
Agricultural Research Council's Poultry Research Centre, West Mains Road, Edinburgh, 9
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.

Two mosaic birds are described, from a sex-linked F1 cross (Rhode Island Red ♂ × Light Sussex ♀). They are sexually normal males and full brothers. Each has the following abnormalities on one side of the body: absence of the maternal dominants S (silver, sex-linked), W (white skin) and Co (Columbian restriction of black), and reduction in size. In one case all the melanocytes appear to be derived from the smaller side, so that the plumage pattern is identical on the two sides; in the other there is a minor deviation (modified expression of Co) from normal F1 plumage pattern on the larger side. Mated to Brown Leghorn hens, both mosaics bred as normal F1 males, with no evidence of germinal mosaicism. Over thirty full sibs were all found to be normal.

A purely paternal origin of the smaller side appears to be excluded in both cases by the lack of striping in the down, and by minor deviations from normal Brown Leghorn phenotype in adult plumage pattern. Origin by some kind of maldistribution of chromosomes at first cleavage division would require the X-chromosome and possibly as many as three autosomes to be affected simultaneously.

Two further unrelated crossbred mosaic males are described. Each has yellow skin (w) on one side of the body. In one case this is accompanied by a slight difference in plumage pattern, reduction in size and abnormal proportions in the limb bones; in the other merely by a slight reduction in size. Loss or non-disjunction of a single chromosome at first cleavage division is a possible explanation of these.

Type
Research Article
Information
Genetics Research , Volume 1 , Issue 2 , July 1960 , pp. 275 - 287
Copyright
Copyright © Cambridge University Press 1960

References

REFERENCES

Blyth, J. S. S. (1954). The mosaic daughter of a mosaic cock. Poult. Sci. 33, 310–315.CrossRefGoogle Scholar
Blyth, J. S. S. & Hale, R. W. (1953). Unilateral defective feathering in a purebred pullet. J. Hered. 44, 181–183.CrossRefGoogle Scholar
Cock, A. G. (1955). Half-and-half mosaics in the fowl. J. Genet. 53, 49–80.CrossRefGoogle Scholar
Cock, A. G. (1959). Irregular mosaicism in a hen. J. Hered. 50, 171–176.CrossRefGoogle Scholar
Crew, F. A. E. & Munro, S. S. (1939). Lateral asymmetry in the fowl. Proc. 7th World's Poultry Congress, Cleveland, 61–64.Google Scholar
Glass, B. (1945). A note on M. Zlotnikoff's ‘A human mosaic’. J. Hered. 36, 192.Google Scholar
Greenwood, A. W. & Blyth, J. S. S. (1951). Genetic and somatic aberrations in two asymmetrically marked fowls from sex-linked crosses. Heredity, 5, 215–231.CrossRefGoogle Scholar
Hollander, W. F. (1944). Mosaic effects in domestic birds. Quart. Rev. Biol. 19, 285–307.CrossRefGoogle Scholar
Hollander, W. F. (1949). Bipaternity in pigeons. J. Hered. 40, 271–277.CrossRefGoogle Scholar
Hutt, F. B. (1929). Sex dimorphism and variability in the appendicular skeleton of the Leghorn fowl. Poult. Sci. 8, 202–218.CrossRefGoogle Scholar
Hutt, F. B. (1949). Genetics of the fowl. New York: McGraw-Hill.Google Scholar
Jerome, F. N. & Huntsman, C. M. (1959). A gynandromorph which arose from a sex-linked cross. Poult. Sci. 38, 727–731.CrossRefGoogle Scholar
Jull, M. A. (1940). Poultry Breeding, 2nd ed.New York: Wiley.Google Scholar
Kimball, E. (1954). Genetics of birchen plumage pattern in the fowl. Poult. Sci. 33, 472–481.CrossRefGoogle Scholar
Newcomer, E. H. (1957). The mitotic chromosomes of the fowl. J. Hered. 48, 227–234.CrossRefGoogle Scholar
Pease, M. S. & Cock, A. G. (1951). Retarded pigmentation: a recessive gene affecting down colour and pattern. Proc. 9th World's Poultry Congress, Paris, 1, 63–67.Google Scholar
Robinson, R. (1957). Mosaicism in mammals. Genetica, 29, 120–145.CrossRefGoogle Scholar
Smyth, J. R. & Bohren, B. B. (1949). A multiple allelic series affecting feather color in the domestic fowl. Poult. Sci. 28, 782.Google Scholar
Warren, D. C. (1949). Linkage relations of autosomal factors in the fowl. Genetics, 34, 333–350.CrossRefGoogle ScholarPubMed
Zlotnikoff, M. (1945). A human mosaic. J. Hered. 36, 162–168.CrossRefGoogle Scholar