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Evolution

A collection of 2 posts

Introduction to phylogenetics

#genetics #evolution

This lecture introduces general concepts pertaining to phylogenetic tree reconstruction, as well as the main approaches used for building trees, including distance-based, maximum parsimony, and maximum likelihood methods. It also discusses phylogenetic uncertainty, bootstrap, and some caveats and bad practices. Slides Click on the image below to access the slides: About this document Contributors Thibaut Jombart: initial version Contributions are welcome via pull requests. The source files of this lecture can be found here. ...

Thibaut Jombart
[lectures] [CC-BY]

Phylogenetic tree reconstruction

#genetics #evolution #influenza

This practical aims to illustrate the basics of phylogenetic reconstruction using R, with an emphasis on how the methods work, how their results can be interpreted, and the relative advantages and limitations of the methods. Three main classes of phylogenetic approaches are introduced, namely distance-based, maximum parsimony, and maximum likelihood methods. We also illustrate how to assess the reliability of individual nodes using bootstrap, and show how a simple linear model can be used to estimate a molecular clock in rooted phylogenies. ...

Thibaut Jombart
[practicals] [CC-BY]
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