Evolution and function of B chromosome 45S rDNA sequences in Brachycome dichromosomatica.

@article{Marschner2007EvolutionAF,
  title={Evolution and function of B chromosome 45S rDNA sequences in Brachycome dichromosomatica.},
  author={Sylvia Marschner and Armin Meister and Frank R. Blattner and Andreas Houben},
  journal={Genome},
  year={2007},
  volume={50 7},
  pages={638-44}
}
The origin and activity of 45S rDNA located on micro B chromosomes of the daisy Brachycome dichromosomatica were analysed. The internal transcribed spacer 2 (ITS2) of the 45S rRNA gene was sequenced for micro B, large B, and A chromosomes of B. dichromosomatica cytodeme A2, and conserved differences were identified between sequences originating from A and both types of B chromosomes. Phylogenetic analysis did not identify a species containing an ITS2 sequence more similar to either of the B… CONTINUE READING