| Genealogical Sorting Index |
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There are several situations in which it is desirable to quantify the degree of exclusive association among observations in groups that are represented on a tree. For example, in the context of evolutionary biology, quantifying the degree of genealogical sorting and allelic histories is important for assessing the degree of differentiation of species and populations or subpopulations, and is essential for understanding conservation status and priority of particular organisms. The genealogical sorting index (gsi) quantifies the historical relationships among groups for any genealogy to enable novel insight into the evolutionary process. It is intuitive, simple, and easily calculated. The software that calculates the genealogical sorting index and measures its significance is made freely available.
1) Upload a rooted tree file containing only representatives for groups you wish to analyze. We will attempt to parse the file based on the format you select. The default is Newick, a format produced by many programs. Be sure the file contains only plain text! Here are some sample files.
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