1
Q
Four reasons to find phylogenies
A
- Tool for making classifications
- Context for diversity
- Device for undestanding history
- Document adaptation
2
Q
Reversals
A
From the derived to the ancestral; cause some members of a clade to resemble non-clade members e.g. lack of shells
3
Q
Convergences
A
Cause members of different clades to resemble each other but not their common ancestor e.g. wings
4
Q
Ancestral traits
A
Might be shared among SOME but not all descendents e.g. worms
5
Q
Parsimony
A
Assume synapomorphies»_space;> other kinds of similarities (ancestral traits, reversals, convergences)
Then simple methods can be used to find the tree
