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Making the most of phylogeny - OPUS - Universität Würzburg

Making the most of phylogeny - OPUS - Universität Würzburg

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Internal transcribed spacer 2 Part I. Introduction<br />

Figure 2.: Ranges for <strong>of</strong>ten used phylogenetic markers.<br />

The bars indicate <strong>the</strong> range for which <strong>the</strong> corresponding DNA sequences are<br />

commonly utilised for phylogenetic comparisons. Abbreviations: ITS internal<br />

transcribed spacer; mtDNA non-coding regions <strong>of</strong> animal mitochondrial<br />

DNA; rbcL <strong>the</strong> large subunit <strong>of</strong> <strong>the</strong> chloroplast gene encoding ribulose bisphosphate<br />

carboxylase. The ITS2 bar represents <strong>the</strong> range possible by use <strong>of</strong> ITS2<br />

secondary structure. Redrawn from Coleman (2003).<br />

Figure 3.: Organisation <strong>of</strong> a typical eukaryotic rRNA cistron.<br />

The drawing illustrates <strong>the</strong> organisation <strong>of</strong> <strong>the</strong> nuclear ribosomal cistrons (blue<br />

boxes) <strong>of</strong> a typical eukaryote composed <strong>of</strong> <strong>the</strong> 5 ′ ETS, <strong>the</strong> 18S-rRNA, internal<br />

transcribed spacer (ITS) 1, <strong>the</strong> 5.8S-rRNA, <strong>the</strong> ITS2, <strong>the</strong> 28S-rRNA and <strong>the</strong> 3 ′<br />

ETS. Between all ribosomal cistrons are NTSs. Redrawn from Coleman (2003).<br />

8

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