Phylogenetic Trees Flashcards
1
Q
What is a Clade?
A
A species and all its descendants. a whole branch of a phyl. tree.
2
Q
Monophyletic
A
forms a clade, a common ancestor and all descendants
3
Q
What does branch length represent?
A
A relative amount of time.
4
Q
paraphyletic
A
all of the descendants of a common ancestor minus one. ex all reptiles but not birds.
5
Q
polyphyletic
A
all of the descendants of a common ancestor and one or more groups from other branches.
