1. Daily Warm-up February 26th
What is allopatric speciation? Please provide an example.
HW:
-Read 18.1
Turn in:
-Nothing

2. Classification

3. Scientific Names Binomial nomenclature (two-part scientific name)
Each species has a unique name
Ursus maritimus= polar bear
Ursus= genus
maritimus= species

4. Classification Systematics- grouping organisms together
Taxa- levels of organization
D, K, P, C, O, F, G, S

5. Evolutionary Classification
Phylogeny- chart depicting evolutionary relationships
Clade- group that has ancestor and all of its descendants
PIT VIPER PICTURE

7. Cladograms
Show relationships

8. Constructing a Cladogram
Morphological data (structures, appearance)
Molecular data (DNA, amino acids)
**Homologies**

9. Characters (traits) Shared ancestral character Derived character
Backbone in mammals
Found in ancestor
Derived character
Mammary glands
Unique trait to mammals