Molecular phylogeny inferred from sequences of small subunit ribosomal DNA, supports the monophyly of the metazoa.

Recent studies of molecular phylogeny based upon comparisons of the partial nucleotide sequences of 18 and 28S rRNAs have suggested that the metazoa are polyphyletic, i.e., that diploblasts (poriferans, cnidarians, ctenophores, and placozoans) and triploblasts form two separated monophyletic units. In order to examine this hypothesis, we determined almost the complete sequences of small subunit (18S-like) rDNA for two poriferans and a ctenophore. Phylogenetic comparisons of the sequences, together with those of a cnidarian, triploblasts and other eukaryotes, supported the monophyly of the metazoa. Among the diploblasts, the ctenophore showed some similarities to the poriferans.

• Publication year

  1993

• Venue

  Zoological Science

• Publication date

  1993-10-01

• Fields of study

  Biology, Medicine

• Identifiers
  PMID 7764372
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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