Crossing-Over Between X and Y Chromosomes During Ribosomal DNA Magnification in Drosophila melanogaster
- 1 July 1973
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 70 (7) , 1950-1954
- https://doi.org/10.1073/pnas.70.7.1950
Abstract
In genetic combinations undergoing ribosomal DNA magnification, the frequency of crossing-over between X and Y chromosomes is increased at least 20-fold above that in similar combinations not undergoing magnification. Such recombination occurs at the ribosomal DNA level. The data are consistent with a model where extra copies of ribosomal DNA are formed which, after circularization, are integrated into the chromosome.Keywords
This publication has 11 references indexed in Scilit:
- Relative Orientation with Respect to the Centromere of Ribosomal RNA Genes of the X and Y Chromosomes of Drosophila melanogasterProceedings of the National Academy of Sciences, 1973
- Procedure for Magnification of Lethal Deletions of Genes for Ribosomal RNANature New Biology, 1972
- THE NUCLEOLUS AND ITS GENES IN AMPHIBIAN OOGENESISBiological Reviews, 1972
- A comparison of the ribosomal DNA's of Xenopus laevis and Xenopus mulleri: the evolution of tandem genesJournal of Molecular Biology, 1972
- The First Steps of Magnification of DNA Complementary to Ribosomal RNA in Drosophila melanogasterProceedings of the National Academy of Sciences, 1971
- The Ribosomal RNA CistronsProgress in Nucleic Acid Research and Molecular Biology, 1971
- The genes for ribosomal RNA during oögenesis.1969
- Unstable redundancy of genes for ribosomal RNA.Proceedings of the National Academy of Sciences, 1968
- Specific Gene Amplification in OocytesScience, 1968
- Nonoperative DNA complementary to ribosomal RNA.Proceedings of the National Academy of Sciences, 1968