title: A trans-acting product needed for P factor transposition in Drosophila.
abstract: A transposable genetic element of the P family in Drosophila melanogaster was found to be unstable in the presence of other P elements but stable in their absence. A sensitive assay for P transpositional activity is provided by the snw allele, a defective P insert in the singed bristle locus which becomes hypermutable only in the presence of complete elements. This measure of activity was highly correlated with a type of female sterility normally associated with P activity. There was no cross-reactivity with transposase from another hybrid dysgenesis-causing element (the I factor).
mesh_terms: D000818:Animals; D003429:Cross Reactions; D004251:DNA Transposable Elements; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D006059:Gonadal Dysgenesis / Q000235:genetics; D007247:Infertility, Female / Q000235:genetics; D008297:Male; D009154:Mutation
chemical_list: D004251:DNA Transposable Elements