Inheritance of the white and pied plumage color pattern in the Indian peafowl (Pavo cristatus)

Article Abstract:

Inheritance patterns of the white, pied, white-flight and dark pied plumage color phenotypes of the Indian peafowl are studied. A single locus is responsible for the phenotypes as shown by crosses among and between them and the wild-type blue. Homozygous white mutant allele produces an all-white plumage while heterozygous white with the wild-type allele shows a weak incomplete dominance with 60% penetrance producing the blue white-flight phenotype. Pieds are heterozygous for two mutant alleles, the pied phenotype not breeding true and dark pieds breeding true with 79% penetrance. The white allele is the most dominant while the dark pied allele is the most recessive.

Cage birds, Pet birds, Peafowl

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Identifying the ptilopody (feathered shank) loci of the chicken

Article Abstract:

A study was done on the inheritance of feathered shanks in chickens. Results showed the presence of the same single-shank feathering locus in both Langshan and Brahma breeds of chickens. It was suggested that both breeds have different alleles for the trait because of their differences in phenotype and penetrance. The Brahma allele was designated Pti-1b and the Langshan allele Pti-1L. There was a significant dominance of Brahma allele over Langshan allele. It was shown that another chicken breed known as Sultan contained the Pti-1L allele and the Pti-1B allele was identified in the Cochin breed.

Chickens, Heredity, Crossing over (Genetics)

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Guinea fowl plumage color inheritance, with particular attention on the dun color

Article Abstract:

A study on the inheritance of plumage color with special reference to the dun color in guinea fowl indicates that the dun color results from an autosomal recessive gene. The gene is assigned the symbol d. The locus of d is independent of the blue gene locus. A light blue dun color results, when both loci are homozygous for their mutant genes.

Color of birds, Bird coloration, Guineafowl, Guinea fowl

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