Nucleolar dominance does not occur in root tip cells of allotetraploid Brassica species.

@article{Hasterok2000NucleolarDD,
  title={Nucleolar dominance does not occur in root tip cells of allotetraploid Brassica species.},
  author={Robert Hasterok and Jolanta Maluszynska},
  journal={Genome},
  year={2000},
  volume={43 3},
  pages={574-9}
}
Using in situ hybridization and silver staining methods, the numbers of active and inactive rDNA loci have been established for three allotetraploid species of Brassica (B. napus, B. carinata, and B. juncea) and their diploid ancestors (B. campestris, B. nigra, and B. oleracea). The allotetraploid species have chromosome numbers equal to the sum of the numbers in their diploid relatives, but have fewer rDNA loci. All species investigated have lower numbers of active NORs (AgNORs, nucleolar… CONTINUE READING
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