On Feb 5, 4:21�pm, chris thompson <
chris.linthomp...@gmail.com> wrote:
> On Feb 4, 4:55 pm, I am not a chemist <
t2judgm...@gmail.com> wrote:
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> > On Feb 4, 1:35 pm, John Harshman <
jharsh...@pacbell.net> wrote:
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> > > On 2/4/13 1:30 PM, Burkhard wrote:
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> > > > On Feb 4, 9:04 pm, John Harshman<
jharsh...@pacbell.net> wrote:
> > > >> On 2/4/13 12:56 PM, Quark E wrote:
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> > > >>> On Feb 4, 12:49 pm, Quark E<
quarke...@gmail.com> wrote:
> > > >>>>
http://www.ncbi.nlm.nih.gov/pubmed/22930817
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> > > >>>> Resolving conflict in eutherian mammal phylogeny using phylogenomics
> > > >>>> and the multispecies coalescent model
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> > > >>>> The reconstruction of the Tree of Life has relied almost entirely on
> > > >>>> concatenation methods, which do not accommodate gene tree
> > > >>>> heterogeneity, a property that simulations and theory have identified
> > > >>>> as a likely cause of incongruent phylogenies
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> > > >>>> Several key relationships among eutherian mammals remain controversial
> > > >>>> and conflicting among previous studies, including the root of
> > > >>>> eutherian tree and the relationships within Euarchontoglires and
> > > >>>> Laurasiatheria. Both bayesian and maximum-likelihood analysis of
> > > >>>> genome-wide data of 447 nuclear genes from 37 species show that
> > > >>>> concatenation methods indeed yield strong incongruence in the
> > > >>>> phylogeny of eutherian mammals, as revealed by subsampling analyses of
> > > >>>> loci and taxa, which produced strongly conflicting topologies. In
> > > >>>> contrast, the coalescent methods, which accommodate gene tree
> > > >>>> heterogeneity, yield a phylogeny that is robust to variable gene and
> > > >>>> taxon sampling and is congruent with geographic data. The data also
> > > >>>> demonstrate that incomplete lineage sorting, a major source of gene
> > > >>>> tree heterogeneity, is relevant to deep-level phylogenies, such as
> > > >>>> those among eutherian mammals. Our results firmly place the eutherian
> > > >>>> root between Atlantogenata and Boreoeutheria and support ungulate
> > > >>>> polyphyly and a sister-group relationship between Scandentia and
> > > >>>> Primates. This study demonstrates that the incongruence introduced by
> > > >>>> concatenation methods is a major cause of long-standing uncertainty in
> > > >>>> the phylogeny of eutherian mammals, and the same may apply to other
> > > >>>> clades.
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> > > >>>
http://www.ncbi.nlm.nih.gov/pmc/?term=22930817%5BPMID%5D&report=image...
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> > > >>> Trends in bootstrap support for coalescent analyses and incongruence
> > > >>> of concatenation estimates for eutherian phylogeny. (A) Gradual
> > > >>> increase in bootstrap support values with increasing gene numbers
> > > >>> using coalescent methods for three clades: Scandentia Primates within
> > > >>> Euarchontoglires, Perissodactyla Carnivora and Cetartiodactyla
> > > >>> (Perissodactyla, Carnivora) within Laurasiatheria. The gray dashed
> > > >>> line indicates bootstrap support of 90%. (B) Concatenation analyses
> > > >>> yield conflicting phylogenies within Euarchontoglires and
> > > >>> Laurasiatheria for subsampled gene and taxon sets. We constructed
> > > >>> coalescent and concatenation trees for different sets of 25, 50, 100,
> > > >>> 200, and 300 genes randomly selected from the 447-gene set, with 10
> > > >>> replicates for each gene set except 447.
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> > > >> Still interesting, but do you have a point to make here?
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> > > > Isn't that our old friend, the one who kept calling you "rollocks" and
> > > > was generally...eccentric...? In which case asking for a sense behind
> > > > his posts might be moot
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> > > I don't know. He had so many names. What's your evidence?
>
> > Act like you completely ignorant of your surveillance on me as a cop
> > and act like you are building a case to ban me.
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> You are building your own case to be banned.
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> Chris
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> PS: You seem to have problems. Seek help. It can work.
Actually, I think he's been banned a long time. I assume all that's
going on is that DIG doesn't know he's back.
Mitchell