Iguana in Bonaire
Evolution and Diversity
A. Vertical and horizontal dimensions of life.
B. How many species?
1.4 million (maybe up to 100 million)
-insects highest number: ~750,000 with 290,000 Coleoptera (beetles)
C. How do we organize diversity?
-systematics
-taxonomy
D. How are species named?
Basic unit- species
binomial nomenclature
genus
specific epithet
authority
Quercus alba L. (white oak)
Canus lupus (gray wolf)
Canus rufus (red wolf)
Canus latrans (coyote)
Canus familiaris (dingo)
Canus lupus familiaris (dog)
Hierarchy in taxonomy (without Domain) (Fig 1.10)
E. How many major groups of organisms are there?
Controversial-One idea
"Lumpers and Splitters"
from: http://www.emc.maricopa.edu/faculty/farabee/BIOBK/kingdoms.gif
from: http://micro.magnet.fsu.edu/cells/procaryotes/images/procaryote.jpg
2. Eubacteria
3. Eukarya
from: http://www.cartage.org.lb/en/themes/Sciences/Zoology/AnimalPhysiology/Anatomy/Anatomy/animalcell.jpg
-Animalia
-Fungi
-Plants
-Protista
F. Phylogeny
-the history of organismal relationships as they change through time
-the "root" of the tree
-How did ancestral domains change over time?
Australian flower
