Kelchner Scot A, Thomas Michael A
Department of Biological Sciences, Idaho State University, Pocatello, ID 83209-8007, USA.
Trends Ecol Evol. 2007 Feb;22(2):87-94. doi: 10.1016/j.tree.2006.10.004. Epub 2006 Oct 17.
Models of character evolution underpin all phylogeny estimations, thus model adequacy remains a crucial issue for phylogenetics and its many applications. Although progress has been made in selecting appropriate models for phylogeny estimation, there is still concern about their purpose and proper use. How do we interpret models in a phylogenetic context? What are their effects on phylogeny estimation? How can we improve confidence in the models that we choose? That the phylogenetics community is asking such questions denotes an important stage in the use of explicit models. Here, we examine these and other common questions and draw conclusions about how the community is using and choosing models, and where this process will take us next.
性状进化模型是所有系统发育估计的基础，因此模型的适用性仍然是系统发育学及其众多应用中的一个关键问题。尽管在为系统发育估计选择合适的模型方面已经取得了进展，但人们仍然对其目的和正确使用存在担忧。我们如何在系统发育背景下解释模型？它们对系统发育估计有什么影响？我们如何提高对所选模型的信心？系统发育学界提出这些问题表明在使用显式模型方面进入了一个重要阶段。在这里，我们研究这些以及其他常见问题，并就学界如何使用和选择模型以及这一过程接下来将把我们带向何方得出结论。
