In situ hybridization analysis of chromosomal homologies in Drosophila melanogaster and Drosophila virilis.
Twenty-four biotin-labeled recombinant-DNA probes which contained putative unique-sequence Drosophila melanogaster DNA were hybridized to larval salivary-gland chromosomes of D. melanogaster and Drosophila virilis. All probes hybridized to D. melanogaster chromosomes at the expected sites. However, one probe hybridized to at least 16 additional sites, and one hybridized to one additional site. Thirteen probes hybridized strongly to D. virilis chromosomes, four hybridized weakly and infrequently, and seven did not hybridize. Probes representing two multigene families (beta-tubulin and yolk-protein) hybridized as would be expected if all sites had been conserved in the two species on the same chromosomal elements. The multiple hybridization sites of a third probe which may represent a multigene family were also conserved. The results were consistent with H.J. Muller's proposal that chromosomal elements have been conserved during evolution of this genus.
Whiting
J H
JH
Department of Zoology, Brigham Young University, Provo, Utah 84602.
Pliley
M D
MD
Farmer
J L
JL
Jeffery
D E
DE
D000818:Animals; D001483:Base Sequence; D002875:Chromosomes; D004247:DNA / Q000235:genetics; D015342:DNA Probes; D004330:Drosophila / Q000235:genetics*; D004331:Drosophila melanogaster / Q000235:genetics; D004527:Egg Proteins / Q000235:genetics; D005810:Multigene Family; D009693:Nucleic Acid Hybridization; D012689:Sequence Homology, Nucleic Acid; D014404:Tubulin / Q000235:genetics
D015342:DNA Probes; D004527:Egg Proteins; D014404:Tubulin; D004247:DNA