Inheritance of the rDNA spacer in D. melanogaster

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1983 Netherlands English Publisher:Springer Science and Business Media LLCJournal:Molecular and General Genetics MGG, volume 189, pages 370-374 (issn: 0026-8925, eissn: 1432-1874,

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Authors: Boncinelli, E.; Borghese, A.; Graziani, F.; Mantia, G. la; Manzi, A.; Mariani, C.; Simeone, A.;

doi: 10.1007/bf00325897

handle: 2066/17408

Inheritance of the rDNA spacer in D. melanogaster

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Abstract

We studied the organization of rDNA spacer sequences within several rDNA loci in D. melanogaster. Every locus showed many discrete length classes of rDNA spacer, ranging from 2.4 kb to about 20 kb. Different loci show characteristic distributions of spacers within the various length classes. Using this molecular characteristic as a genetic marker, segregation, recombination and occurrence of unequal crossing-over were studied. The rDNA loci segregated with a Mendelian pattern; interhomologous recombination events occurred at the expected rate; conversely unequal crossing-over within the rDNA locus appears not to be as frequent as expected.

Country

Netherlands

Related Organizations

National Research Council
Italy
Radboud University Nijmegen
Netherlands
Institute of Genetics and Biophysics
Italy
International Institute of Minnesota
United States

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