Trex-online

Interactive HGT allows you to define your own horizontal gene transfers as well as
discard or reverse horizontal gene transfers found by the algorithm.

Paste your species tree in the Newick format:

Species tree file Pasted

Paste your gene tree in the Newick format:

Gene tree file Pasted

Data sets : Matte-Taillez et al. (2002, gene rpl12e, 14 species),
Delwiche and Palmer (1996, gene rbcL, 40 species),
Woese et al. (2000, gene pheRS, 32 species)

Suggest initial HGT(s)

Select the root of the species tree
(if the root is not specified in the Newick string and the checkbox is not checked, the tree will be rooted by midpoint)

Select the root of the gene tree
(if the root is not specified in the Newick string and the checkbox is not checked, the tree will be rooted by midpoint)

HGT detection mode

several HGTs by iteration
one HGT by iteration

Optimization criterion

Bipartition dissimilarity
Robinson and Foulds distance
Least-squares

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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.