Exam 1 5/6 Flashcards
Homoplasy
-Like convergent evolution
-Similarities inherited independently
Taxonomy
-Organizing lifes diversity
-Created by Carolus Linnaeus
How phylogenys inform taxonomy
-Shows evolutionary relationships
-Phylogenys correct taxonomies
Natural selection
Mechanism that can cause divergence of organisms
Taxanomic categories
Domains
kingdoms
phylum
class
order
family
genus
species
History of evolutionary thought
- Carolus Linneas developed nomenclature
- Darwin published natural selection book 1859
- Alfred Wallace had same idea, founder of biogeography
Darwins 4 postulates
- Individuals within populations are variable
- Variations among individuals are inherited from parents
- Each generation some individuals are more successful at surviving and reproducing
- Individuals with the most favorable variations are naturally selected
Example of natural selection
-When certain resources run out, the individuals who can adapt to new resources are naturally selected
Fitness
Number of offspring in a lifetime
Adaptation
A trait value that increases fitness of individual relative to an individual with a different trait value