Why do identical sequences form a "comb-like" structure with non-zero branch lengths on the resulting phylogram in Mr.Bayes?

29 February 2024 0 3K Report

Hello, can anyone explain me why MrBayes gives long terminal branches for different speciomens with the same sequences? I am studying multigene phylogeny and for some individual nuclear gene tress I get this picture.

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Science method

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