title: No crossing over between closely linked tumour virus loci in the heterogametic sex of fowl.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000254:growth & development*; D002478:Cells, Cultured; D002642:Chick Embryo; D002645:Chickens; D003433:Crosses, Genetic; D003434:Crossing Over, Genetic; D005260:Female; D008040:Genetic Linkage; D005838:Genotype; D008297:Male; D010641:Phenotype; D012730:Sex Chromosomes