title: Single-locus modification of position-effect variegation in Drosophila melanogaster. I. White variegation.
mesh_terms: D000818:Animals; D002874:Chromosome Mapping; D003433:Crosses, Genetic; D003582:Cytogenetics; D003720:Densitometry; D004330:Drosophila; D005260:Female; D005796:Genes; D005838:Genotype; D008297:Male; D010641:Phenotype; D010858:Pigmentation