Is there any treelikeness in prokaryotic phylogenetic history

Right now there are some very valid questions being asked about how treelike we might expect to find the history of prokaryotes.  Conflicting phylogenetic trees derived from homologs-that-look-like-orthologs are probably in large part due to horizontal (or lateral if you prefer) gene transfer.  Some might be due to hidden paralogy, poor phylogenetic models and maybe […]

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Research returns to Ireland far exceed investment

by Dick Ahlstrom, Irish Times Financial returns from Ireland’s expenditure in research have easily outstripped the original investment, according to a study released on 19 September. It claims that while the Exchequer put in almost €1.2 billion over the period 2000-2006 the returns amounted to about €1.8bn. The study by PA Consulting said that the […]

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Clans, clades and unrooted trees

A few years back, Mark Wilkinson at The Natural History Museum, London came up with the idea that we should really have a more precise language for groups that we can see on unrooted trees. The problem stemmed from the fact that on an unrooted tree a clade is not defined. A clade is a […]

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