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Bio 2 exam 1
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Node
Speciation event/ common ancestor
Branch
Connects taxa to ancestral groups
Root
Base of tree
Sister taxa
Share a common ancestor
Taxa
Groups of species
Branch tip
Labeled w/ different taxa
Basal branches
Closer to the root
Pruning
Removing specific branches from a phylogeny to more clear showy show the relationship between clades of interest (does not change relationship just visualization)
Merging
Combining clades to make a phylogeny w/ fewer branches (doesn't change relationships just visualization)

Monophyletic group (clade)
A common ancestor and all descendants are included

Paraphyletic group
Ancestor & some descendants (not all descendants)

Polyphletic group
Most common ancestor of all taxa is not included
Derived characteristics
New traits unique to lineage
Ancestral characters
Traits present in ancestral group