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Literature DB >> 4198277

Relative orientation with respect to the centromere of ribosomal RNA genes of the X and Y chromosomes of Drosophila melanogaster.

Abstract

We tested for recombination within the DNA that codes for ribosomal RNA (rDNA) on the X and Y chromosomes of Drosophila melanogaster. The criterion was the appearance of intermediate bb alleles on X-Y recombinants from wild bb(+) and lethal bb(1) loci carried on parental chromosomes. Recombination within the rDNA occurs only when the rDNA of the X chromosome is inverted. We conclude that rDNAs of normal X and Y chromosomes have opposite orientation with respect to the centromere. The implications of this observation are discussed.

Entities: Species

Mesh：

Substances：
RNA, Ribosomal

Year: 1973 PMID： 4198277 PMCID： PMC433618 DOI： 10.1073/pnas.70.6.1883

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

7 in total

1. Cytogenetic analysis of major heterochromatic elements (especially Xh and Y) in Drosophila melanogaster, and the theory of "heterochromatin".

Authors: K W COOPER
Journal: Chromosoma Date: 1959 Impact factor: 4.316

2. Interchange between X- and Y-Chromosomes in Attached X Females of Drosophila Melanogaster.

Authors: B P Kaufmann
Journal: Proc Natl Acad Sci U S A Date: 1933-09 Impact factor: 11.205

3. THE RELATION BETWEEN X-RAY DOSAGE AND THE FREQUENCY OF SIMULATED HEALING OF CHROMOSOME BREAKAGES IN DROSOPHILA MELANOGASTER FEMALES.

Authors: I H Herskowitz
Journal: Proc Natl Acad Sci U S A Date: 1954-07 Impact factor: 11.205

4. Identification of Half-Translocations Produced by X-Rays in Detaching Attached-X Chromosomes of Drosophila Melanogaster.

Authors: S Abrahamson; I H Herskowitz; H J Muller
Journal: Genetics Date: 1956-05 Impact factor: 4.562

6 in total

Relative orientation with respect to the centromere of ribosomal RNA genes of the X and Y chromosomes of Drosophila melanogaster.

1. Cytogenetic analysis of major heterochromatic elements (especially Xh and Y) in Drosophila melanogaster, and the theory of "heterochromatin".

2. Interchange between X- and Y-Chromosomes in Attached X Females of Drosophila Melanogaster.

3. THE RELATION BETWEEN X-RAY DOSAGE AND THE FREQUENCY OF SIMULATED HEALING OF CHROMOSOME BREAKAGES IN DROSOPHILA MELANOGASTER FEMALES.

4. Identification of Half-Translocations Produced by X-Rays in Detaching Attached-X Chromosomes of Drosophila Melanogaster.

5. Location of ribosomal DNA in the human chromosome complement.

6. Exchanges at the bobbed locus of Drosophila melanogaster.

7. A molecular explanation of the bobbed mutants of Drosophila as partial deficiencies of "ribosomal" DNA.

1. rDNA magnification in D. melanogaster: state of rDNA copies following the first step.

2. The life and times of Ferruccio Ritossa.

3. Crossing-over between X AND Y chromosomes during ribosomal DNA magnification in Drosophila melanogaster.

4. Rex-induced recombination implies bipolar organization of the ribosomal RNA genes of Drosophila melanogaster.

5. Premeiotic change of nucleolus organizer size in Neurospora.

6. The effect of mei-41 on rDNA redundancy in Drosophila melanogaster.