What is Descent with Modification
Change in Allele frequency over time.
Aristotle
The Great Chain of Being Fixicity of Species -species created in current form -no extinction/creation of new -variation is noise around an ideal.
Archbishop Usher
Natural theolgian, counted back to Adam and Eve. Gave Earth an age of 6000 years.
Linneaus
- Binomial Classification System
- Classed Humans as Animals
- Didn’t see descent - believed in Fixicity
- Tree based on similarities - looks like phylogeny
- First Explicit Racism.
George Louis De Boufon
Comparative Anatomist and Biogeographist
Species can change to suit environment
Not evolution
George Cuvier
Proposed the Idea of Extinction
Catastrophism - new creation after each catastrophy.
Jean Baptiste de Marc
Mechanism for early evolution
Girraffes neck
Environment is a key factor.
Thomas Malthas
Essay on Principles of Populations
Saw Popultions had greater reproductive potential than available food.
More born than survive.
Charles Lyell
Principle of Geology
Theory of Uniformitarianism
- opposite of Catastrophism, events that happen now happen in the past.
-Implied an old earth.
Darwins Evidence
- Artificial Selection
- Biogeography.
- Paeleontology
- Comparative Anatomy
- Embryology.
