The Interaction and Linkage of Sex-linked Plumage Color Gene in Egg Quail
蛋用鹌鹑伴性羽色基因互作与连锁的关系 The Interaction and Linkage of Sex-linked Plumage Color Gene in Egg Quail

The interaction of sex-linked gene for plumage color in quails was first discovered and identified by genetic test.It was proved that the phenotypic expressions of the maroon feather,the yellow feather and the white feather result from the interaction between B/b and Y/y loci in the Z-chromosome.The allele B and b have something to do with the composition of pigment in plumage and nothing to do with any relative characters,the coloured gene B is dominant to its albino allele b.The maroon and yellow feather constituted a pair of relative characters determined by a couple of alleles Y and y,the maroon feather was caused by a dominant allele Y,and the yellow feather caused by a recessive allele y.But the phenotypic expression of maroon and yellow was decided by the present of the coloured gene B in Z-chromosome,the maroon feather was the result of interaction between gene B and Y,the yellow feather was result of interaction between gene B and y.The white was caused by a recessive albino gene b which epistasis to gene Y and y.The incomplete linkage was present between B/b and Y/y in Z-chromosome in male and complete linkage in female.This research enriches and delelops the earlier studies of the sex-linked inheritance of plumage color.It provides an important genetic basis for the quail autosexing system production by means of plumage color.