<p>In phylogenetic analysis one study the relationship between different species. By comparing DNA from two different species it is possible to get a numerical value representing the difference between the species. For a set of species, all pair-wise comparisons result in a dissimilarity matrix <em>d</em>.</p><p>In this thesis I present a few methods for constructing a phylogenetic tree from <em>d</em>. The common denominator for these methods is that they do not generate a tree, but instead give a connected graph. The resulting graph will be a tree, in areas where the data perfectly matches a tree. When <em>d</em> does not perfectly match a tree, the resulting graph will instead show the different possible topologies, and how strong support they have from the data.</p><p>Finally I have tested the methods both on real measured data and constructed test cases.</p>
| Identifer | oai:union.ndltd.org:UPSALLA/oai:DiVA.org:liu-56814 |
| Date | January 2010 |
| Creators | Krig, Kåre |
| Publisher | Linköping University, Department of Mathematics |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, text |
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