ArticleGenetics1995
Ribosomal DNA evolution at the population level: nucleotide variation in intergenic spacer arrays of Daphnia pulex.
Article in Genetics, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Effect of copper and nickel exposure on ribosomal DNA variation in Daphnia pulex mutation accumulation lines.G3 (Bethesda, Md.) · 2025Article
- Copy number and sequence variation in rDNA of Daphnia pulex from natural populations: insights from whole-genome sequencing.G3 (Bethesda, Md.) · 2024Article
- Age-Dependent and Tissue-Specific Alterations in the rDNA Clusters of theBiomolecules · 2020Article
- Variation in the number of nucleoli and incomplete homogenization of 18S ribosomal DNA sequences in leaf cells of the cultivated Oriental ginseng (Panax ginseng Meyer).Journal of ginseng research · 2016Article
- Copy number of the transposon, Pokey, in rDNA is positively correlated with rDNA copy number in Daphnia obtuse [corrected].PloS one · 2014Article
- Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae), the Cayenne tick: phylogeography and evidence for allopatric speciation.BMC evolutionary biology · 2013Article
- Copy number variation of ribosomal DNA and Pokey transposons in natural populations of Daphnia.Mobile DNA · 2012Article
- Evolution of the nuclear ribosomal DNA intergenic spacer in four species of the Daphnia pulex complex.BMC genetics · 2011Article
- Evolution of repeated sequences in the ribosomal DNA intergenic spacer of 32 arthropod species.Journal of molecular evolution · 2010Article
- Rates of recombination in the ribosomal DNA of apomictically propagated Daphnia obtusa lines.Genetics · 2007Article
- Article
- Functional and ecological significance of rDNA intergenic spacer variation in a clonal organism under divergent selection for production rate.Proceedings. Biological sciences · 2002Article
- Structure and organization of the rDNA intergenic spacer in lake trout (Salvelinus namaycush).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2000Article
- Extraordinary ribosomal spacer length heterogeneity in a neotyphodium endophyte hybrid: implications for concerted evolution.Genetics · 1998Article
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1 author.
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Abstract
Nucleotide variation was surveyed in 21 subrepeat arrays from the ribosomal DNA intergenic spacer of three Daphnia pulex populations. Eighteen of these arrays contained four subrepeats. Contrary to expectations, each of the four positions within the array had a different consensus sequence. However, gene conversion, involving sequences less than the length of a subrepeat, had occurred between subrepeats in different positions. Three arrays had more than four subrepeats and were undoubtedly generated by unequal crossing over between standard-length arrays. The data strongly suggested that most unequal exchanges between arrays are intrachromosomal and that they occur much less frequently than unequal exchanges at the level of the entire rDNA repeat. Strong associations among variants at different positions allowed the recognition of five groups of arrays, two of which were found in more than one population. Five of the seven individuals surveyed had arrays from more than one group. Analysis of the distribution of nucleotide variation suggested that the populations were quite divergent, a result that is concordant with previous surveys of allozyme and mitochondrial DNA variation. It was suggested that some of the subrepeat array types are quite old, at least predating the recolonization of pond habitats in the midwestern United States after the last glaciation.
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