MO640 - Exercises - Phylogenetic trees: Parsimony, Felsenstein (2004) - chapter 1

Exercises marked with (*) require further reading/search beyond the suggested texts.

1. Find ancestor states that yield the minimum number of changes in the topology below, based on the given matrix of spieces vs. characters.

plylogeny ABCD
C1 C2 C3
A 0 1 1
B 1 1 0
C 1 0 0
D 1 0 1

Answer:

There is no assignment with 3 changes. We can see ancestor states that yield 4 changes, the minimum possible, in the image below:

minimizing changes

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