Magic bullets and golden rules: Data sampling in molecular phylogenetics

被引:40
作者
Cummings, MP [1 ]
Meyer, A
机构
[1] Univ Maryland, Ctr Bioinformat & Computat Biol, College Pk, MD 20742 USA
[2] Univ Konstanz, Dept Biol, Lehrstuhl Zool & Evolut Biol, D-78457 Constance, Germany
基金
美国国家科学基金会; 美国国家航空航天局;
关键词
phylogenetics; data sampling; gene sampling; taxon sampling;
D O I
10.1016/j.zool.2005.09.006
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Data collection for molecular phylogenetic studies is based on samples of both genes and taxa. In an ideal world, with no limitations to resources, as many genes could be sampled as deemed necessary to address phylogenetic problems. Given limited resources in the real world, inadequate (in terms of choice of genes or number of genes) sequences or restricted taxon sampling can adversely affect the reliability or information gained in phylogenetics. Recent empirical and simulation-based studies of data sampling in molecular phylogenetics have reached differing conclusions on how to deal with these problems. Some advocated sampling more genes, others more taxa. There is certainly no 'magic bullet' that will fit all phylogenetic problems, and no specific 'golden rules' have been deduced, other than that single genes may not always contain sufficient phylogenetic information. However, several general conclusions and suggestions can be made. One suggestion is that the determination of a multiple, but moderate number (e.g., 6-10) of gene sequences might take precedence over sequencing a larger set of genes and thereby permit the sampling of more taxa for a phylogenetic study. (c) 2005 Elsevier GmbH. All rights reserved.
引用
收藏
页码:329 / 336
页数:8
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