Classification

1. Classification Grouping similar organisms together

2. Taxonomy • science of identifying, naming and classifying organisms • first developed by Carl Linneaus in 1750’s • based on morphology (body shape/form) • uses a 2 part Latin naming system called binomial nomenclature • 1st word is the genus, 2nd the species • Homo sapien (H. sapien) • Ursusamericanus • Ursusmaritimus

3. species further grouped into different levels (taxa) • each level higher, organisms are less related

4. Phylogeny • evolutionary development of a gp of organisms • use fossils, DNA analysis & proteins • more similar DNA & proteins are more closely related 2 things are

5. Phylogenetic Trees • hypothesis of the evolutionary relationships

6. Clades • tip of a branch on a phylogenetic tree • shows an ancestor species and all its descendants

7. Dichotomous Key • way of determining the correct species of an organism • it uses a series of paired comparisons to sort organisms into smaller and smaller groups • ex Musicians

8. Male Female Rap Pop From Napanee Not From Napanee