NDLI: Ribosomal DNA and Stellate gene copy number variation on the Y chromosome of Drosophila melanogaster.

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Use of the DNA polymerase chain reaction for homology probing: isolation of partial cDNA or genomic clones encoding the iron-sulfur protein of succinate dehydrogenase from several species.

Ribosomal DNA and Stellate gene copy number variation on the Y chromosome of Drosophila melanogaster.

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Ribosomal DNA and Stellate gene copy number variation on the Y chromosome of Drosophila melanogaster.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Lyckegaard, E. M. Clark, A. G.
Description	Author Affiliation: Lyckegaard EM ( Department of Biology, Pennsylvania State University, University Park 16802.);
Abstract	Multigene families on the Y chromosome face an unusual array of evolutionary forces. Both ribosomal DNA and Stellate, the two families examined here, have multiple copies of similar sequences on the X and Y chromosomes. Although the rate of sequence divergence on the Y chromosome depends on rates of mutation, gene conversion and exchange with the X chromosome, as well as purifying selection, the regulation of gene copy number may also depend on other pleiotropic functions, such as maintenance of chromosome pairing. Gene copy numbers were estimated for a series of 34 Y chromosome replacement lines using densitometric measurements of slot blots of genomic DNA from adult Drosophila melanogaster. Scans of autoradiographs of the same blots probed with the cloned alcohol dehydrogenase gene, a single copy gene, served as internal standards. Copy numbers span a 6-fold range for ribosomal DNA and a 3-fold range for Stellate DNA. Despite this magnitude of variation, there was no association between copy number and segregation variation of the sex chromosomes.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	6
Volume Number	86
Language	English
Publisher	National Academy of Sciences
Publisher Date	1989-04-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	DNA, Ribosomal Genetics Drosophila Melanogaster Multigene Family Y Chromosome Alcohol Dehydrogenase Animals DNA Probes Genetic Variation Nucleic Acid Hybridization Research Support, U.S. Gov't, P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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