Phylogenies
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11 Terms
node
point in time when an ancestral group split into two or more descendant groups
branch
a population over time
sister taxa
closely related taxa on adjacent branches arising from same node
outgroup
taxon closely related to particular monophyletic group that does not share same traits
homology
traits that are similar due to shared ancestry
homoplasy
traits that are similar for reasons other than common ancestry and therefore evolved independently
synapomorphy
a shared, derived trait due to common ancestry
monophyletic
an evolutionary group containing an ancestrl population and all its descendants
paraphyletic
a group that includes an ancestral population and some of its descendants
polyphyletic
group whose members’ last common ancester is not a member of the group
parsimony
the idea that the most likely explanation for a phenonmenon is the simpliest
Note 
Flashcards (105)