doi: 10.1007/BF00484768.
Gene action in fish of tetraploid origin. IV. Ribosomal DNA amount in clupeoid and salmonoid fish
- PMID: 962845
- DOI: 10.1007/BF00484768
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Gene action in fish of tetraploid origin. IV. Ribosomal DNA amount in clupeoid and salmonoid fish
Biochem Genet.
1976 Apr.
Abstract
Phylogenetically tetraploid species of the fish order Isospondyli generally have twice the mean ribosomal gene content as closely related species on the phylogenetically diploid level. Considerable intraspecific variation of rDNA amount was observed. These findings are discussed in view of the hypothesis that selective loss of ribosomal genes may account for diminishing genic activity in phylogenetically tetraploid organisms.
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