stat_geo allows for checking divergence of a given sequence alignment. It allows you to check whether your sequences (RNA, DNA, protein) follow a tree-like pattern of divergence or a bundle-like pattern.This is the main capability of the library. It is important to perform the test in order to see whether a tree can be built for a set of sequences (if they follow bundle-like divergence, building a tree doesn’t make sense at all).It also allows for checking how various positions in an alignment of many related sequences are randomized, and therefore concluding which are constrained in the process of evolution.
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Proc Natl Acad Sci U S A. 1988 Aug;85(16):5913-7.
Statistical geometry in sequence space: a method of quantitative comparative sequence analysis.
Eigen M, Winkler-Oswatitsch R, Dress A.