1. Phylogeny
Evolutionary history of a species

2. Taxonomy Classification of organisms Binomial nomenclature Taxons
Genus species
Ex. Panthera leo
Homo sapiens
Taxons
DKPCOFGS

3. Phylogenetic Tree Purpose is to show lines of descent
Does not reflect absolute age
Cannot assume neighboring taxons evolved from one another

6. Daily Warm-up January 30th
Percy Jackson and Annabeth are trying to figure out what a griffin’s proper scientific name would be. What would they be looking for? Please make a scientific name up using the correct format. HW: -Read 20.2 Turn in: -Test corrections if haven’t already

7. How Phylogenetic Trees are Created
1. Molecular
DNA
2. Morphological
Physical appearance and structures
Ex. Homologous structures
Need to be able to distinguish from analogous structures- these do not reflect evolutionary relationships

9. Cladistics and Cladograms
Type of phylogenetic tree
Places members into groups (clades) based on homologies

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

11. Making a Clade Use an outgroup
Diverged before line of species of interest (ingroup)

12. Timing in Phylogenetic Trees
Some trees can indicate evolutionary change and time

13. Time