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Fitch (PHYLIP)

Paste your distance matrix in the Phylip format into the window (no spaces in the species names; at least one space is required in the end of a species name):
Data type : Distance matrix Sequences
File Pasted


Data example : Vertebrate dataset

User input Tree options
Search for best tree
Use lengths from user trees
Tree file

Compute options
Negative branch lengths allowed
Outgroup root Outgroup :
Lower-triangular data matrix
Upper-triangular data matrix
Global rearrangements
Randomize input order of sequences
Random number seed (odd):
Number of times to jumble:
Analyze multiple data sets Number of sets:

Felsenstein, J. 1989. PHYLIP - Phylogeny Inference Package (Version 3.2). Cladistics 5: 164-166.

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Boc, A., Diallo, Alpha B. and Makarenkov, V. (2012), T-REX: a web server for inferring, validating and visualizing phylogenetic trees and networks, Nucleic Acids Research, 40(W1), W573-W579.

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Webmasters : Alix Boc and Alpha Boubacar Diallo