Ten genetic loci in the chicken that contain structural genes for endogenous avian leukosis viruses.
Our interpretation of the results presented here may be summarized as follows: (1) Endogenous viral genes can be located at any of a large number of sites in the chicken chromsome. (2) Different phenotypes of viral gene expression are observed, depending on the nature of the viral sequences at a given site and depending on whether the necessary sequence elements for expression are present. (3) Endogenous viral genes perform no essential function in the chicken.
D001355:Alpharetrovirus / Q000235:genetics*; D000818:Animals; D002645:Chickens / Q000382:microbiology*; D002874:Chromosome Mapping; D005796:Genes; D005814:Genes, Viral; D005838:Genotype; D010641:Phenotype