2. Evolution Flashcards
Founder of Natural Selection
Darwin / Wallace - Independently
Which was first, Evolution or Natural Selection
Evolution
Darwinian Evolution Theory
Perpetual Change Common Descent Multiplication of Species Gradualism Natural Selection
Which of Darwinian theories were accepted as having a universal application
Perpetual Change
Common Descent
Multiplication of Species
Which of Darwinian theories were unresolved
Gradualism
Natural Selection
Perpetual Change
The living world is always Changing
Evidence for Perpetual Change
Fossil Records
The downside of Fossil Records
Biased - only hard structures remain - soft body animals not preserved
e.g. Jellyfish
Common Descent
All organisms are a descendent of LUCA (Last Universal Common Ancestor)
Evidence for Common Descent
Shared Characteristics of living things
Homology
Shared Characteristics of Living Things
- Chemical Uniqueness
- Complexity and hierarchical organization
- Reproduction
- Possession of genetic program
- Metabolism
- Development
- Environmental interaction
- Movement
Is the genetic code universal
Almost - not entirely
Homology / Homologous feature
The similarity of parts or organs of different organisms caused by evolutionary derivation from a corresponding part or organ in a common ancestor
Natural Selection
The process whereby organisms better adapted to their environment survive and produce more offspring - Survival of the fittest
