The Genetic Structure Specificities of the Population of the Rhode-Island Red Chicken Breed by Quantitative Trait Loci

Abstract

Genetic structure of a chicken population (breed Rhode Island Red) for the growth hormone, pituitary transcription factor-1, transforming growth factor-β family, and prolactin receptor loci has been studied. Allele frequencies for the MspI polymorphism in the first intron of the growth hormone gene were (A) 0.39, (B) 0.13, and (C) 0.48; those for the SacI polymorphism in the fourth intron of the growth hormone gene were (A) 0.11 and (B) 0.89; those for pituitary transcription factor-1 locus were (I) 0.65 and (D) 0.35; and those for the transforming growth factor loci were (B) 0.15 and (F) 0.85 for β 1, (B) 0.61 and (L) 0.39 for β 2, and (B) 0.33 and (L) 0.67 for β 3, respectively. The prolactin receptor locus (fifth exon) turned out to be monomorphic in the chicken population studied. The chicken population studied was in a Hardy–Weinberg genetic equilibrium state for all polymorphic loci analyzed.