title: [The variability of the telomeric and of a number of internal regions of Drosophila chromosomes according to the intensity of hybridization in situ with labelled probes].
abstract: Cloned Drosophila DNA fragments containing telomere-specific sequences have been hybridized in situ. It is found that intensity of their hybridization with telomeres greatly varies in different nuclei of the same salivary gland. This phenomenon is also observed for internal sites where some mobile elements included in several DNA fragments under investigation are located. Within each nucleus different regions are hybridized non-uniformly as well. It is suggested that these phenomena can be explained by varying polytenization in telomeres and some internal chromosomal regions.
authors: B A
authors: BA
authors: Leĭbovich
authors: E V
authors: EV
authors: Kurenova
authors: O N
authors: ON
authors: Danilevskaia
mesh_terms: D000818:Animals; D010582:Bacteriophage lambda / Q000235:genetics; D002875:Chromosomes / Q000648:ultrastructure*; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics*; D015342:DNA Probes; D004331:Drosophila melanogaster; D014644:Genetic Variation / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D010957:Plasmids / Q000235:genetics; D011995:Recombination, Genetic
chemical_list: D015342:DNA Probes; D004247:DNA
vernacular_title: Variabel'nost' telomernykh i riada vnutrennikh raĭonov khromosom drozofily po intensivnosti gibridizatsii in situ s mechenymi zondami.