I did not, because this is a course for non-SCI majors, so I keep it as math-free as possible, just counting basically. This way, they fully wrap their brains around what is happening and they do the analysis fully themselves, not even a calculator. Their eyes really open wide when they see how easy it is to see evidence for common ancestry. People always think that scientific data is just beyond them, totally inaccessible, and lots of it really isn’t!