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Article

Reduced rDNA copy number does not affect "competitive" chromosome pairing in XYY males of Drosophila melanogaster.

G3 (Bethesda, Md.) - 20 Mar 2014

Maggert Keith A

Abstract excerpt

The ribosomal DNA (rDNA) arrays are causal agents in X-Y chromosome pairing in meiosis I of Drosophila males. Despite broad variation in X-linked and Y-linked rDNA copy number, polymorphisms in regulatory/spacer sequences between rRNA genes, and variance in copy number of interrupting R1 and R2 retrotransposable elements, there is little evidence that different rDNA arrays affect pairing efficacy. I investigated...

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Identifiers

PMID: 24449686
DOI: 10.1534/g3.113.008730
PMCID: PMC3962488

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Source receipt: pubmed, retrieved 7 Sept 2026.

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