10.3 Phylogeny Flashcards
1
Q
What is phylogeny?
A
evolutionary relationships between organisms
2
Q
What are the advantages of phylogenetic classification?
A
- CONTINUOUS
- organisms do not have to be forced into discrete groups
- NOT HIERARCHICAL
- can compare different groups accurately.
3
Q
What is the main difference between early forms of classification & phylogeny?
A
early classification systems classify based on physical characteristics
phylogeny classifies based on evolutionary relationships
4
Q
Explain what 2 diverging lines mean on a phylogenetic tree:
A
divergent evolution
5
Q
How can you identify a common ancestor using a phylogenic tree?
A
trace back the lines on 2 organisms until they meet
at this point, they shared a common ancestor & subsequently underwent divergent evolution
