- names often described the physical

- historically it was done as a matter of life and death

- 2 word naming system

or underlined

- second part =

where the organism lives

The levels are:

evolutionary relationships among groups of organisms

at the molecular level

- these neutral mutations accumulate in the DNA of differentspecies at about the same rate

reveal how dissimilar the genes are. The degree of

1) Bacteria / Kingdom Eubacteria

membrane (composed of Peptidoglycan = protein + sugar)

- all organisms that have a nucleus

1. Protista

- some photosynthetic, some heterotrophic