[adegenet-forum] Population clustering idea

[Pfau, Dr. Russell S.]

A tree depicts bifurcating relationships.  Populations do not always diverge in a bifurcating manner (i.e. a population may split into four separate populations.  That's one reason against using trees to depict relationships among populations.  Another reason against using trees is that populations may be connected by gene flow or hybridization.  Trees can't deal with that.  I'm sure there are other technical reasons, but I'll let someone else handle that.

-Russell

From: adegenet-forum-bounces at r-forge.wu-wien.ac.at [mailto:adegenet-forum-bounces at r-forge.wu-wien.ac.at] On Behalf Of Mac Campbell
Sent: Friday, April 29, 2011 11:11 AM
To: adegenet-forum at r-forge.wu-wien.ac.at
Subject: [adegenet-forum] Population clustering idea

Hi ,

I was looking at another grad students clustering analysis, and he displayed it as a tree.  It was some sort of ecological data.    Anyways, I thought it might be useful to compare groups identified through DAPC that way.  Display them graphically using adegenet, but also provide some sort of tree as a hypothesis of relationships.  It would seem to me that this could already by done in R without the need to develop anything new.  Does anybody have an idea how to take output from dapc and make a tree?

Mac



--
Matthew A Campbell
Department of Biology and Wildlife
University of Alaska, Fairbanks

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