Lecture 12.docx

8 views2 pages
18 Apr 2012
School
Department
Course
Professor
Lecture 12
Intro to evolutionary biology: Chap 1 Coyne
1. Intro to evolution
Multiple factors for certain questions in evolutionary biology. Why/how questions
2. How evolution is studied
Approaches: observational, theoretical(modes, mathematical), comparative(same
data from diff species), experimental(manipulative test of a theory).
Assumptions about evolution:
-speciation, common ancestor, gradual evolution, change results from natural
selection.
Definitions
Biodiversity: variety of life on earth, number and kinds in a given area. (not just
species diversity, also genetic diversity)
Adaptations: two definitions. A) noun- any trait that contributes to fitness by
making an organism better able to survive or reproduce in a given environment.
B)verb- evolutionary process that leads to the origin and maintenance of such
straits
Types
1)Macroevolution- evolutionary history. Relationships between organisms, tree of
life. Common ancestor, through study of phylogenies. Allows for classification to
reflect evolutionary history aka taxonomy& systematics. People here look at
genomes, morphology and paleonotology.
2)Microeconomics- mechanisms of evolution, natural selection.
3. Evidence for evolution
4. Theory for evolution
- Unifying concept of biology
- Affects other areas of knowledge
- Keystone of western thought
- theodosuis dobzhanksy- nothing else makes sense except in the light of
evolution. Studied fruit fly. Modern evolutionary synthesis, merging of
mendelian and mathematical ideas.
5. Biodiversity and adaptation
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.