2. Phylogeny
Humans have family trees that go back for many
generations to show our lineage and our ancestors.
These family trees show how 2 people may be related
to each other and by how many generations.
20. • To which other organism is Cervus elaphus
most closely related? At what rank and taxon
are they related?
21. Modern Taxonomy:
Think. Pair. Share
What are the drawbacks of traditional taxonomy?
- dichotomous keys may be ambiguous or subjective.
- following a dichotomous key takes time.
- mutations may lead to incorrect classification.
22. Modern Taxonomy:
Think. Pair. Share
What are the drawbacks of traditional taxonomy?
- different genetic structures may lead to similar
physical structures.
- evolutionary relatedness is only a guess using
physical features.
23. Modern Taxonomy:
Think. Pair. Share
How can all of these obstacles be overcome?
24. Modern Taxonomy
How can all of these obstacles be overcome?
By collecting and comparing DNA samples of specimens,
their identity and evolutionary relatedness can be
determined efficiently and accurately.
