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. 2014 Dec 20;15(1):1153. doi: 10.1186/1471-2164-15-1153

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© Gilchrist et al.; licensee BioMed Central. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The comparative frequency of variants across the rRNA locus. The proportion of sites that vary from the consensus rRNA sequence is shown for B. tryoni (blue), B. neohumeralis (yellow) and B. jarvisi (red). Variation was measured from the consensus sequence for that species. The consensus sequence for B. jarvisi is only 9498 bp (rather than 10 kb) due to shorter assembled IGS sequences. The bar below the graph indicates the rRNA unit, with the four rRNA loci shown in black. The limits of the four rRNA loci are based on the D. melanogaster sequence. IGS = intergenic spacer (incomplete), ETS = external transcribed sequence, ITS1 and 2 = internal transcribed sequences.