Question
a.
It works by searching for all possible tree topologies and reconstructing ancestral sequences that require the minimum number of changes to evolve to the current sequences
b.
Other than informative sites are non-informative, which are constant sites or sites that have changes occurring only once
c.
Informative sites are the ones that can often be explained by a unique tree topology
d.
Constant sites have the same state in all taxa and are quite useful in evaluating the various topologies
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