Inheritance of the henny-feathering trait of the sebright bantam chicken

R. G. Somes, F. W. George, J. Baron, J. F. Noble, J. D. Wilson

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The henny-feathering trait of the Sebright bantam chicken is the result of an enhanced rate of estrogen synthesis (aromatase activity) in skin and other peripheral tissues of this bird. To gain insight into the underlying nature of this mutation, we examined the inheritance of this trait using a sensitive isotopic assay for aromatase activity. All birds of the F1 generation obtained by crossing homozygous henny X non-henny chickens expressed increased arornatase in the skin, and the males exhibited benny-feathering plumage. The average rate of aromatase activity in the skin of F1 chicks was approximately half that of homozygous henny chicks. The distribution of increased aromatase activity in the F2 generation and in the backcrosses of F1 to the two types of parental strains suggest that the enzyme activity in extragonadal tissues is regulated predominantly by one autosomal gene. Attempts to demonstrate linkage to several known loci by backcrossing F1 heterozygotes with parental chickens carrying a variety of genetic markers were unsuccessful. We conclude that the enhanced estrogen synthesis in extragonadal tissues in chickens carrying this gene is inherited as an autosomal codominant but that a half maximal level of the enzyme is sufflcient to allow full development of female feathering in affected male birds so that benny-feathering is transmitted as a dominant trait.

Original languageEnglish (US)
Pages (from-to)99-102
Number of pages4
JournalJournal of Heredity
Volume75
Issue number2
StatePublished - Mar 1984

Fingerprint

Bantam
Aromatase
Birds
Chickens
inheritance (genetics)
Skin
skin (animal)
Tissue
chickens
Genes
Estrogen
estrogens
birds
Estrogens
chicks
Enzyme activity
Enzymes
synthesis
Inbreeding
backcrossing

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Genetics(clinical)
  • Biotechnology
  • Molecular Biology
  • Genetics
  • Agricultural and Biological Sciences(all)

Cite this

Somes, R. G., George, F. W., Baron, J., Noble, J. F., & Wilson, J. D. (1984). Inheritance of the henny-feathering trait of the sebright bantam chicken. Journal of Heredity, 75(2), 99-102.

Inheritance of the henny-feathering trait of the sebright bantam chicken. / Somes, R. G.; George, F. W.; Baron, J.; Noble, J. F.; Wilson, J. D.

In: Journal of Heredity, Vol. 75, No. 2, 03.1984, p. 99-102.

Research output: Contribution to journalArticle

Somes, RG, George, FW, Baron, J, Noble, JF & Wilson, JD 1984, 'Inheritance of the henny-feathering trait of the sebright bantam chicken', Journal of Heredity, vol. 75, no. 2, pp. 99-102.
Somes RG, George FW, Baron J, Noble JF, Wilson JD. Inheritance of the henny-feathering trait of the sebright bantam chicken. Journal of Heredity. 1984 Mar;75(2):99-102.
Somes, R. G. ; George, F. W. ; Baron, J. ; Noble, J. F. ; Wilson, J. D. / Inheritance of the henny-feathering trait of the sebright bantam chicken. In: Journal of Heredity. 1984 ; Vol. 75, No. 2. pp. 99-102.
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