title: Structure and genomic organization of I elements involved in I-R hybrid dysgenesis in Drosophila melanogaster.
abstract: I-R hybrid dysgenesis in D. melanogaster is controlled by transposable elements known as I factors which terminate at their 3' ends by an A-rich sequence. Inducer strains contain active I factors. Both reactive and inducer stocks possess defective I elements. We have cloned various I elements from both categories of strains. The I elements having recently transposed in inducer strains have a structure closely related to that of active I factors. However we have isolated one such I element that is truncated at its 5' end. The I elements common to reactive and inducer strains are affected by various rearrangements and many point mutations. They do not appear to be simple derivatives of complete I factors.
authors.affiliation: Unité Associée au CNRS no. 360, Université Blaise Pascal, Aubière, France.
authors.forename: M
authors.initials: M
authors.lastname: Crozatier
authors.forename: C
authors.initials: C
authors.lastname: Vaury
authors.forename: I
authors.initials: I
authors.lastname: Busseau
authors.forename: A
authors.initials: A
authors.lastname: Pelisson
authors.forename: A
authors.initials: A
authors.lastname: Bucheton
mesh_terms: D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004251:DNA Transposable Elements; D004331:Drosophila melanogaster / Q000235:genetics*; D005786:Gene Expression Regulation; D006824:Hybridization, Genetic; D012091:Repetitive Sequences, Nucleic Acid; D015183:Restriction Mapping; D013045:Species Specificity
chemical_list: D004251:DNA Transposable Elements