沉闷科学的掘墓人分享 http://blog.sciencenet.cn/u/Bearjazz

博文

每日翻译20190719

已有 304 次阅读 2019-7-19 07:38 |个人分类:翻译作品|系统分类:科研笔记| BEAST, 速率变化支系, 特征重建, 分子钟

#编者信息

熊荣川

明湖实验室

xiongrongchuan@126.com

http://blog.sciencenet.cn/u/Bearjazz

Examples

Figure 2 presents a reconstruction of the   gene tree relating 13 species of Darwin’s fnches from a 2,065-bp partial   nucleotide alignment of the mitochondrial control region and cytochrome b   genes (Sato et al. 1999) and fve continuously measured phenotypic traits of   the corresponding species (Sulloway 1982). In performing this simultaneous   inference, we exploit the RLC model (Drummond and Suchard 2010) and find   evidence for one suggestive rate change (Bayes factor in favor of the RLC   over a strict clock = 2.3) in the lineage leading to the Cocos Island Finch,   Pinaroloxias inornata. Multivariate Brownian trait diffusion shows strong   correlation between wing and tarsus length and between bill depth and gonys   length. Posterior trait prediction at any point along the history is possible   and, currently unique to BEAST, comparative method inference is performed   jointly with phylogenetic inference.

举例说明

2展示了13个达尔文雀的基因树情况,该树是基于2065 bp线粒体控制区和细胞色素b基因(Sato et al. 1999)比对序列以及相关物种5个表型量化特征构建的(Sulloway 1982)。在进行这一同步推断的过程中,我们采用了RLC模型(Drummond and Suchard 2010)且在科科斯岛雀(Pinaroloxias Inornata)的谱系中找到一个提示性速率变化的证据(strict clock = 2.3时,Bayes因子对RLC最优)。多变异的布朗性状扩散显示翼长与跗骨长度之间以及嘴高与下喙长度之间的存在强相关性。对于BEAST来说,进化树上任何一点的后验特性预测都是可能且唯一,(特征)比较推理与系统发育推理相可以结合起来。

Drummond A J , Suchard M A , Xie D , et   al. Bayesian Phylogenetics with BEAUti and the BEAST 1.7[J]. Molecular   Biology and Evolution, 2012, 29(8):1969-1973.




http://blog.sciencenet.cn/blog-508298-1190165.html

上一篇:每日翻译20190718
下一篇:每日翻译20190720

0

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...
扫一扫,分享此博文

Archiver|手机版|科学网 ( 京ICP备14006957 )

GMT+8, 2019-8-20 07:03

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部