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. 2012 Jul 26;13(7):R66. doi: 10.1186/gb-2012-13-7-r66

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Copyright ©2012 Lommer et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Vertical versus horizontal inheritance of genes. For evaluation of the extent of laterally acquired genes we focused on the 10,109 AUGUSTUS gene models that have homologs in the NCBI nr protein database at a conservative E-value cutoff of 1.0E-30 (middle bar). A significant fraction of the vertically inherited genes (left) is not shared with the closest relative T. pseudonana, but rather with P. tricornutum. Genes acquired through mechanisms of lateral gene transfer (LGT; right) appear to be derived from diverse prokaryotic and eukaryotic taxons with the highest contribution by the green algal genus Micromonas.