Intragenomic variation of the rDNA internal transcribed spacers in sponges (Phylum Porifera): implications for phylogenetic studies.

@article{Wrheide2004IntragenomicVO,
  title={Intragenomic variation of the rDNA internal transcribed spacers in sponges (Phylum Porifera): implications for phylogenetic studies.},
  author={Gert W{\"o}rheide and Scott A Nichols and Julia E Goldberg},
  journal={Molecular phylogenetics and evolution},
  year={2004},
  volume={33 3},
  pages={816-30}
}
The internal transcribed spacer regions (ITS1 and ITS2) of the tandemly repeated nuclear ribosomal DNA clusters are frequently used as markers for fine scale analyses in diverse animals. In certain taxa, ITS is nearly exclusively used for population level or inter-specific studies, despite the frequent presence of divergent paralogs within individual genomes that can be phylogenetically misleading. For the first time we survey diverse marine sponges to determine the extent and phylogenetic… CONTINUE READING