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Gene action in fish of tetraploid origin. III. Ribosomal DNA amount in cyprinid fish (1976)

Schmidtke, J. ; Engel, W.

Springer

Biochemical genetics 14 (1976), S. 19-26

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ISSN: 1573-4927

Keywords: evolution ; polyploidy ; ribosomal RNA genes ; cyprinid fish

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Chemistry and Pharmacology

Notes: Abstract Phylogenetically diploid and tetraploid cyprinid fish species have cells of very similar volumes and protein contents. This finding has prompted us to postulate a regulatory system established during the evolution of the tetraploids leading to a diploid state of genic expression. It was proposed that this might be accounted for by a selective loss of ribosomal genes. RNA-DNA hybridization experiments, however, reveal a clear-cut 1:2 relationship of ribosomal DNA amounts between the diploid and the tetraploid species.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00484870

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