Diversity of sponge mitochondrial introns revealed by <Emphasis Type="Italic">cox 1</Emphasis>sequences of Tetillidae |
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Authors: | Amir Szitenberg Chagai Rot Micha Ilan Dorothée Huchon |
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Institution: | (1) Department of Zoology, Tel-Aviv University, 69978 Tel Aviv, Israel;(2) Department of Molecular Genetics, Weizmann Institute of Science, 76100 Rehovot, Israel;(3) National Evolutionary Synthesis Center, 2024 W. Main St., Suite A200, 27705 Durham, NC, USA |
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Abstract: | Background Animal mitochondrial introns are rare. In sponges and cnidarians they have been found in the cox 1 gene of some spirophorid and homosclerophorid sponges, as well as in the cox 1 and nad 5 genes of some Hexacorallia. Their sporadic distribution has raised a debate as to whether these mobile elements have been
vertically or horizontally transmitted among their hosts. The first sponge found to possess a mitochondrial intron was a spirophorid
sponge from the Tetillidae family. To better understand the mode of transmission of mitochondrial introns in sponges, we studied
cox 1 intron distribution among representatives of this family. |
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