Abstract
Drosophila melanogaster 125I-5S RNA was annealed to salivary gland preparations of 6 species in the virilis group of Drosophila. Two patterns of annealing were found. D. virilis, D. montana and D. borealis showed three 5S gene clusters on chromosome 5; Sd–f and Wc–j were strongly labeled, but Xa–e was weakly labeled. D. montana and D. borealis have a greater percentage of their total 5S cistrons at S d–f than does D. virilis. D. americana americana, D. americana texana and D. novamexicana showed 2 sites labeled; no label was seen at Sd–f while Wc–j was weakly labeled and Xa–e was strongly labeled, the reciprocal of the previous pattern in the W-X region. Hybrids between D. a. americana and D. virilis showed no difference in chromosome banding at the sites of the 5S clusters despite their pattern differences. D. a texana x D. virilis, on the other hand, did show a difference in staining the Xa–e region. These patterns fall squarely into the biosystematic groupings deduced by many previous workers.
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Selected References
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- Alonso C., Berendes H. D. The location of 5S (ribosomal) RNA genes in Drosophila hydei. Chromosoma. 1975 Aug 11;51(4):347–356. doi: 10.1007/BF00326321. [DOI] [PubMed] [Google Scholar]
- Brown D. D., Sugimoto K. 5 S DNAs of Xenopus laevis and Xenopus mulleri: evolution of a gene family. J Mol Biol. 1973 Aug 15;78(3):397–415. doi: 10.1016/0022-2836(73)90464-6. [DOI] [PubMed] [Google Scholar]
- Brownlee G. G., Cartwright E. M., Brown D. D. Sequence studies of the 5 S DNA of Xenopus laevis. J Mol Biol. 1974 Nov 15;89(4):703–718. doi: 10.1016/0022-2836(74)90046-1. [DOI] [PubMed] [Google Scholar]
- Cohen M., Jr Ectopic pairing and evolution of 5S ribosomal RNA genes in the chromosomes of Drosophila funebris. Chromosoma. 1976 Jun 23;55(4):349–357. doi: 10.1007/BF00292830. [DOI] [PubMed] [Google Scholar]
- Hsu T. C., Spirito S. E., Pardue M. L. Distribution of 18+28S ribosomal genes in mammalian genomes. Chromosoma. 1975 Nov 20;53(1):25–36. doi: 10.1007/BF00329388. [DOI] [PubMed] [Google Scholar]
- Hughes R. D. An Analysis of the Chromosomes of the Two Sub-Species Drosophila Virilis Virilis and Drosophila Virilis Americana. Genetics. 1939 Nov;24(6):811–834. doi: 10.1093/genetics/24.6.811. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hutchison N., Pardue M. L. The mitotic chromosomes of Notophthalmus (=Triturus) viridescens: localization of C banding regions and DNA sequences complementary to 18S, 28S and 5S ribosomal RNA. Chromosoma. 1975 Nov 20;53(1):51–69. doi: 10.1007/BF00329390. [DOI] [PubMed] [Google Scholar]
- Stone W. S., Guest W. C., Wilson F. D. THE EVOLUTIONARY IMPLICATIONS OF THE CYTOLOGICAL POLYMORPHISM AND PHYLOGENY OF THE VIRILIS GROUP OF DROSOPHILA. Proc Natl Acad Sci U S A. 1960 Mar;46(3):350–361. doi: 10.1073/pnas.46.3.350. [DOI] [PMC free article] [PubMed] [Google Scholar]