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The 18S ribosomal RNA sequence of the sea anemone Ammonia sulcata and its evolutionary position among other eukaryotes
Author(s) -
Hendriks Lydia,
Van de Peer Yves,
Van Herck Martine,
Neefs Jean-Marc,
De Wachter Rupert
Publication year - 1990
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(90)81212-7
Subject(s) - sea anemone , biology , bilateria , anemone , ribosomal rna , monophyly , evolutionary biology , phylogenetic tree , genetics , ecology , gene , clade
Evolutionary trees based on partial small ribosomal subunit RNA sequences of 22 metazoa species have been published [(1988) Science 239, 748‐753]. In these trees, cnidarians (Radiata) seemed to have evolved independently from the Bilateria, which is in contradiction with the general evolutionary view. In order to further investigate this problem, the complete srRNA sequence of the sea anemone Ammonia sulcata was determined and evolutionary trees were constructed using a matrix optimization method. In the tree thus obtained the sea anemone and Bilateria together form a monophyletic cluster, with the sea anemone forming the first line of descent of the metazoan group.