Appels, R. & Hilliker, A. J. (1982). The cytogenetic boundaries of the rDNA region within heterochromatin of the X chromosome of Drosophila melanogaster and their relation to male meiotic pairing sites. Genetical Research 39, 149–156.
Baltimore, D. (1981). Gene conversion: some implications for immunoglobulin genes. Cell 24, 592–594.
Boncinelli, E., Borghese, A., Graziani, F., La Mantia, G., Manzi, A., Mariani, C. & Simeone, A. (1983). Inheritance of the rDNA spacer in D. melanogaster. Molecular and General Genetics 189, 370–374.
Coen, E. S. & Dover, G. A. (1983). Unequal exchanges and the coevolution of X and Y rDNA arrays in Drosophila melanogaster. Cell 33, 849–855.
Coen, E. S., Strachan, T. & Dover, G. (1982). Dynamics of concerted evolution of ribosomal DNA and histone gene families in the melanogaster species subgroup of Drosophila. Journal of Molecular Biology 158, 17–35.
Coen, E. S., Thoday, J. M. & Dover, G. (1982) Rate of turnover of structural variants in the rDNA gene family of Drosophila melanogaster. Nature 295, 564–568.
Dawid, I. B. & Botchan, P. (1977). Sequences homologous to ribosomal insertions occur in the Drosophila genome outside the nucleolus organizer. Proceedings of the National Academy of Sciences, U.S.A. 74, 4233–4237.
De Cicco, D. V. & Glover, D. M. (1983). Amplification of rDNA and Tl sequences in Drosophila males deficient in rDNA. Cell 32, 1217–1225.
Dutton, F. L. & Krider, H. M. (1984). Factors influencing the disproportionate replication of the ribosomal cistrons in Drosophila melanogaster. Genetics 107, 395–404.
Frankham, R. (1980). Origin of genetic variation in selection lines. In Selection Experiments in Laboratory and Domestic Animals (ed. Robertson, A.), pp. 56–68. Slough: Common-wealth Agricultural Bureaux.
Frankham, R., Briscoe, D. A. & Nurthen, R. K. (1978). Unequal crossing over at the rRNA locus as a source of quantitative genetic variation. Nature 272, 80–81.
Frankham, R., Briscoe, D. A. & Nurthen, R. K. (1980). Unequal crossing over at the rRNA tandon as a source of quantitative genetic variation. Genetics 95, 727–742.
Gerbi, S. A. (1985). Evolution of ribosomal DNA. In Molecular Evolutionary Genetics (ed. Maclntyre, R. J.), pp. 419–517. New York: Plenum Press.
Gillings, M. R., Frankham, R., Speirs, J. & Whalley, M. (1987). X–Y exchange and the coevolution of the X and Y rDNA arrays in Drosophila melanogaster. Genetics 116, 241–251.
Hawley, R. S., & Tartof, K. D. (1983). The ribosomal DNA of Drosophila melanogaster is organized differently from that of Drosophila hydei. Journal of Molecular Biology 163, 499–503.
Hilliker, A. J. & Appels, R. (1982). Pleiotropic effects associated with the deletion of heterochromatin surrounding rDNA on the X chromosome of Drosophila. Chromosoma 86, 469–490.
Kalumuck, K. E. & Procunier, J. D. (1984). Non-selective amplification of ribosomal DNA repeat units in compensating genotypes of Drosophila melanogaster. Biochemical Genetics 22, 453–465.
Kidd, S. J. & Glover, D. M. (1980). A DNA segment from D. melanogaster which contains five tandemly repeating units homologous to the major rDNA insertion. Cell 19, 103–119.
Lindsley, D. L., Appels, R. & Hilliker, A. J. (1982). The right breakpoint of In(1)scv2 subdivides the ribosomal DNA. Drosophila Information Service 59, 99–100.
Lindsley, D. L. & Grell, E. H. (1968). Genetic variations of Drosophila melanogaster. Carnegie Institute of Washington Publication No. 627.
Long, E. O., Rebbert, M. L. & Dawid, I. B. (1980). Structure and expression or ribosomal RNA genes of Drosophila melanogaster interrupted by type 2 insertions. Cold Spring Harbor Symposium on Quantitative Biology 45, 667–672.
Maddern, R. H. (1981). Exchange between the ribosomal RNA genes of the X and Y chromosomes of Drosophila melanogaster males. Genetical Research 38, 1–7.
Maden, B. E. H. & Tartof, K. D. (1974). Nature of the ribosomal RNA transcribed from the X and Y chromosomes of Drosophila melanogaster. Journal of Molecular Biology 90, 51–64.
Pace, N. R., Olsen, G. J. & Woese, G. J. (1986). Ribosomal RNA phylogeny and the primary lines of evolutionary descent. Cell 45, 325–326.
Palumbo, G., Endow, S. A. & Hawley, R. S. (1984). Reduction of wild type X chromosomes with the Ybb− chromosome of D. melanogaster. Genetical Research 43, 93–98.
Peacock, W. J., Appels, R., Endow, S. & Glover, D. (1981). Chromosomal distribution of the major insert in Drosophila melanogaster 28S rRNA genes. Genetical Research 37, 209–214.
Renkawitz-Pohl, R., Glatzer, K. H. & Kunz, W. (1981). Ribosomal RNA genes with an intervening sequence are clustered within the X-chromosomal ribosomal DNA of Drosophila hydei. Journal of Molecular Biology 148, 95–101.
Ritossa, F. (1976). The bobbed locus. In Genetics and Biology of Drosophila (ed. Ashburner, M. & Novitski, E.), pp. 801–846. London: Academic Press.
Roiha, H. & Glover, D. M. (1980). Characterisation of complete type II insertions in cloned segments of ribosomal DNA from Drosophila melanogaster. Journal of Molecular Biology 140, 341–355.
Roiha, H., Miller, J. R., Woods, L. C. & Glover, D. M. (1981). Arrangements and rearrangements of sequences flanking the two types of rDNA insertion in D. melanogaster. Nature 290, 749–753.
Salzano, G. & Malva, C. (1984). Non-random loss of uninterrupted ribosomal DNA repeating units upon induction of a bobbed mutation. Journal of Molecular Biology 177, 189–200.
Sharp, Z. D., Gandhi, V. V. & Procunier, J. D. (1983). X chromosome nucleolus organizer mutants which alter major type I repeat multiplicity in Drosophila melanogaster. Molecular and General Genetics 190, 438–443.
Tartof, K. D. (1975). Redundant genes. Annual Review of Genetics 9, 355–385.
Tartof, K. D. & Dawid, I. B. (1976). Similarities and differences in the structure of X and Y chromosome rDNA genes of Drosophila. Nature 263, 27–30.
Terracol, R. & Prud'homme, N. (1986). Differential elimination of rDNA genes in bobbed mutants of Drosophila melanogaster. Molecular and Cellular Biology 6, 1023–1031.
Wellauer, P. K., Dawid, I. B. & Tartof, K. D. (1978). X and Y chromosomal ribosomal DNA of Drosophila: comparison of spacers and insertions. Cell 14, 269–278.
Yagura, T., Yagura, M. & Muramatsu, M. (1979). Drosophila melanogaster has different ribosomal RNA sequences on X and Y chromosomes. Journal of Molecular Biology 133, 533–547.