The Jukes–Cantor Matrix, Kimura-2 Matrix, and Kimura-3 Matrix

<p>These three matrices correspond to JC69, K80, and K81 in the Felsenstein hierarchy [<a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.0020073#pcbi-0020073-b011" target="_blank">11</a>] of probabilistic models for DNA sequence evolution.</p>