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. 1973 Jul;70(7):1950–1954. doi: 10.1073/pnas.70.7.1950

Crossing-Over Between X and Y Chromosomes During Ribosomal DNA Magnification in Drosophila melanogaster

F Ritossa 1
PMCID: PMC433640  PMID: 4198661

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: genetic recombination, frequency of crossing-over, circularization, integration

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1950

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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