Hasegawa M, Adachi J, Milinkovitch M C
Institute of Statistical Mathematics, Tokyo, Japan.
J Mol Evol. 1997;44 Suppl 1:S117-20. doi: 10.1007/pl00000062.
Given that the analysis of a single gene does not necessarily provide unambiguous phylogenetic information, it is important to scrutinize as many genes as possible. Using the maximum likelihood method, particularly suitable for a total evidence approach, we evaluated the phylogenetic information provided by the 12S and 16S rRNA, cytochrome b, and myoglobin sequence data in order to resolve one of the most debated phylogenetic questions: the relationships among the major groups of cetaceans. Our analysis strongly supports the hypothesis that sperm whales are closer to baleen whales than to dolphins.
鉴于对单个基因的分析不一定能提供明确的系统发育信息，尽可能多地审查基因是很重要的。使用特别适用于全证据方法的最大似然法，我们评估了12S和16S rRNA、细胞色素b和肌红蛋白序列数据所提供的系统发育信息，以解决最具争议的系统发育问题之一：鲸类主要类群之间的关系。我们的分析有力地支持了一个假说，即抹香鲸与须鲸的亲缘关系比与海豚更近。
