GENETICS OF WHITE-BREASTED, WHITE AND BROWN COLORS AND DESCRIPTIONS OF FEATHER PATTERNS IN JAPANESE QUAIL

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Abstract
Genetic investigation showed that a newly arisen mutant trait, white breast feathers, was recessive, autosomal and followed a simple Mendelian pattern of inheritance when tested with the gray (Wild Type) Japanese Quail. The same results were demonstrated for a white-feathered trait. The brown-feathered trait was demonstrated to be due to a single autosomal gene which showed partial dominance. Segregation of progeny from matings between brown birds having a large patch of white feathers in the breast region indicated that the loci for brown and white were independent and that heterozygous white produced the patch phenotype in the presence of homozygous or heterozygous brown. Other feather pattern variants described were white crescent and white beard feathers, both were recessive traits and each possibly due to an effect at a single locus.

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