Going nuclear: gene family evolution and vertebrate phylogeny reconciled

J. Cotton, R. Page
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引用次数: 89

Abstract

Gene duplications have been common throughout vertebrate evolution, introducing paralogy and so complicating phylogenetic inference from nuclear genes. Reconciled trees are one method capable of dealing with paralogy, using the relationship between a gene phylogeny and the phylogeny of the organisms containing those genes to identify gene duplication events. This allows us to infer phylogenies from gene families containing both orthologous and paralogous copies. Vertebrate phylogeny is well understood from morphological and palaeontological data, but studies using mitochondrial sequence data have failed to reproduce this classical view. Reconciled tree analysis of a database of 118 vertebrate gene families supports a largely classical vertebrate phylogeny.
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走向核:基因家族进化与脊椎动物系统发育的调和
基因复制在脊椎动物的进化过程中是普遍存在的,这使得从核基因进行的系统发育推断更加复杂。调和树是一种能够处理相似性的方法,利用基因系统发育与含有这些基因的生物体系统发育之间的关系来识别基因复制事件。这使我们能够从包含同源和同源拷贝的基因家族中推断系统发育。从形态学和古生物学数据可以很好地理解脊椎动物的系统发育,但使用线粒体序列数据的研究未能再现这一经典观点。对118个脊椎动物基因家族数据库的和解树分析支持一个很大程度上经典的脊椎动物系统发育。
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