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PHylogenetic Analysis with Space/Time models PHAST


A freely available software package for comparative and evolutionary genomics. It consists of about half a dozen major programs, plus more than a dozen utilities for manipulating sequence alignments, phylogenetic trees, and genomic annotations. For the most part, PHAST focuses on two kinds of applications: the identification of novel functional elements, including protein-coding exons and evolutionarily conserved sequences; and statistical phylogenetic modeling, including estimation of model parameters, detection of signatures of selection, and reconstruction of ancestral sequences.

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PHAST versioning

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PHAST classification

PHAST specifications

Software type:
Restrictions to use:
Programming languages:
Command line interface
Operating system:
Unix/Linux, Mac OS, Windows
Computer skills:

PHAST support


  • PHAST <>


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Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY, USA

Link to literature

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