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Dear Ensembl team,<br>
I wanted to report a strange behavior/feature of the Compara Gene
Trees.<br>
I often see in gene trees that some genes do not branch where they
are supposed to, which is inevitable I guess. However in some cases,
this leads to inference of false duplications. I find it very useful
that Ensembl provides a confidence score for duplications, and
labels "dubious" duplications, those with a score of 0.<br>
But I find surprising that a duplication with a score of 1% is
labeled as "real" duplication. I see this happen quite often, and it
seems to me that the threshold used to call a dubious duplication
should be increased.<br>
<br>
See for example the
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ENSAMXG00000008930 gene, which clusters outside of the fish clade,
leading to a false duplication at the basis of the vertebrate
lineage (besides, this gene seems to be only a fragment of the gene
model, which should be labeled as a gene_split event): <br>
<a class="moz-txt-link-freetext" href="http://www.ensembl.org/Astyanax_mexicanus/Gene/Compara_Tree?db=core;g=ENSAMXG00000008930;r=KB882106.1:4258864-4262355;t=ENSAMXT00000009178;collapse=2625743,2625667,2625666,2625573">http://www.ensembl.org/Astyanax_mexicanus/Gene/Compara_Tree?db=core;g=ENSAMXG00000008930;r=KB882106.1:4258864-4262355;t=ENSAMXT00000009178;collapse=2625743,2625667,2625666,2625573</a><br>
<br>
Maybe there is some justification for this choice, please let me
know what you think.<br>
Best regards<br>
Julien<br>
<pre class="moz-signature" cols="72">--
Julien Roux
Marie-Curie postdoctoral fellow
Department of Ecology and Evolution, University of Lausanne, Switzerland
<a class="moz-txt-link-freetext" href="http://www.unil.ch/dee/home/menuinst/people/post-docs--associates/dr-julien-roux.html">http://www.unil.ch/dee/home/menuinst/people/post-docs--associates/dr-julien-roux.html</a>
Tel: +41 78 700 2931
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