The analysis of eight transcriptomes from all poriferan classes reveals surprising genetic complexity in sponges.

@article{Riesgo2014TheAO,
  title={The analysis of eight transcriptomes from all poriferan classes reveals surprising genetic complexity in sponges.},
  author={A. Riesgo and N. Farrar and Pamela J Windsor and G. Giribet and S. Leys},
  journal={Molecular biology and evolution},
  year={2014},
  volume={31 5},
  pages={
          1102-20
        }
}
Sponges (Porifera) are among the earliest evolving metazoans. Their filter-feeding body plan based on choanocyte chambers organized into a complex aquiferous system is so unique among metazoans that it either reflects an early divergence from other animals prior to the evolution of features such as muscles and nerves, or that sponges lost these characters. Analyses of the Amphimedon and Oscarella genomes support this view of uniqueness-many key metazoan genes are absent in these sponges-but… Expand
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