Abstract
In the two Drosophila races D. n. nasuta and D. n. albomicans the nucleolar-organizer regions (NORs) have been localized on metaphase chromosomes by a combined acid treatment and silver-staining technique. In both Drosophila races one NOR is present on the heterochromatic Y chromosomes and another on the microchromosomes. Such a NOR distribution has not yet been reported in Drosophila. It is suggested that this distribution has evolved from an original type with NORs on the X and Y chromosomes.
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References
Beck, H. & Srdič, Ž., 1979. Heterocromatin in mitotic chromosomes of Drosophila hydei. Genetica 50: 1–10.
Bicudo, H. E. M. C. & Richardson, R. H., 1977. Gene regulation in Drosophila mulleri and D. arizonensis and their F1 hybrids: The nucleolar organizer. Proc. natn. Acad. Sci. U.S.A. 74: 3498–3502.
Czaker, R., 1978. Silver staining in transcriptionally active NORs of meiotic cells in Acheta domesticus (L.) (Orthoptera). Chromosoma 68: 187–193.
Endow, S. A. & Gall, J. G., 1975. Differential replication of satellite DNA in polyploid tissues of Drosophila virilis. Chromosoma 50: 175–195.
Goodpasture, C. & Bloom, S. E., 1975. Visualisation of nucleolus organizer regions in mammalian chromosomes using silver staining. Chromosoma 53: 37–50.
Hägele, K. & Ranganath, H. A., 1982. The chromosomes of two Drosophila races: D. nasuta nasuta and D. n. albomicana. II. Differences in their microchromosomes. Chromosoma 85: 215–220.
Heneen, W. K., 1979. Silver staining of nucleolar organizer and nucleoli during mitosis and interphase of mammalian cells. Genetica 50: 31–39.
Hennig, W., Link, B. & Leoncini, O., 1975. The location of the nucleolus organizer regions in Drosophila hydei. Chromosoma 51: 57–63.
Hochmann, B., 1976. The fourth chromosome of Drosophila melanogaster. In: The genetics and biology of Drosophila, 1b (Ashburner, M. & Novitski, E., eds) pp. 903–928. Academic Press. London.
Howell, W. M., 1977. Visualization of ribosomal gene activity: Silver stains proteins associated with rRNA transcribed from oocyte chromosomes. Chromosoma 62: 361–367.
Krivshenko, J., 1959. New evidence for the homology of the short euchromatic elements of the X and Y chromosomes of Drosophila busekii with the microchromosomes of Drosophila melanogaster. Genetics 44: 1027–1040.
Matsui, S. & Sasaki, M., 1973. Differential staining of nucleolus organizers in mammalian chromosomes. Nature Lond. 246: 148–150.
Matsui, S., 1974a. Nucleolus organizer of Vicia faba chromosomes revealed by the N-banding technique. Japan. J. Genet. 49: 93–96.
Matsui, S., 1974b. Structual protein associated with ribosomal cistrons in Xenopus laevis chromosomes. Expl Cell Res. 88: 88–94.
Matsui, S., 1974c. A note on constitutive heterochromatin in Drosophila melanogaster chromosoms. Japan. J. Genetics 49: 171–173.
Mohan, J., 1977. Multiplicity of ribosomal RNA genes in Drosophila melanogaster during growth and development. Dros. Inf. Serv. 52: 132.
Nirmala Sajjan, S. & Krishnamurthy, N. B., 1971. Karyotype of Drosophila nasuta. Dros. Inf. Serv. 47: 121–122.
Nirmala Sajjan, S. & Krishnamurthy, N. B., 1972. Drosophila albomicans — a race of Drosophila nasuta. Dros. Inf. Serv. 49: 60.
Pimpinelli, S., Santini, G. & Gatti, M., 1976. Characterization of Drosophila heterochromatin. II. C- and N-banding. Chromosoma 57: 377–386.
Privitera, E., 1980. A Drosophila melanogaster cell line tested for the presence of active NORs by silver staining. Chromosoma 81: 431–437.
Ranganath, H. A., Schmidt, E. R. & Hägele, K., 1982. Satellite DNA of Drosophila nasuta nasuta and D. n. albomicana. Localization in polytene and metaphase chromosomes. Chromosoma (in press).
Ranganath, H. A. & Hägele, K., 1982. The chromosomes of two Drosophila races: D. nasuta nasuta and D. nasuta albomicana. I. Distribution and differentiation of heterochromatin. Chromosoma 85: 83–92.
Sinibaldi, R. M. & Cummings, M. R., 1981. Localization and characterization of rDNA in Drosophila tumiditarsus. Chromosoma 81: 655–671.
Spear, B., 1974. The genes for ribosomal RNA in diploid and polytene chromosomes of Drosophila melanogaster. Chromosoma 48: 159–179.
Varley, J. M., 1977. Patterns of silver staining of human chromosomes. Chromosoma 61: 207–214.
Wilson, F., Wheeler, M. R., Harget, M. & Kambysellis, M., 1969. Cytogenetic relations in the Drosophila nasuta subgroup of the immigrans group of species. Univ. Texas Publs 6918: 207–254.
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Hägele, K., Ranganath, H.A. The chromosomes of two Drosophila races: D. nasuta nasuta and D. nasuta albomicans III. Localization of nucleolar organizer regions. Genetica 60, 123–128 (1983). https://doi.org/10.1007/BF00127498
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DOI: https://doi.org/10.1007/BF00127498