ANT208H1 Lecture Notes - Lecture 3: Coevolution, Microevolution, Adaptationism

13 views3 pages
5 Apr 2012
Medical Anthropology: Lecture 2: Evolutionary Biology.
Relation between the terms that follow:
- Genotype
- Phenotype
- Inheritance
Evolution: Natural Selection
- Idea that all living organisms have changed over time.
- The most widely tested and accepted theory to explain the natural world
would be the theory of natural selection.
- Evolution: Change in the average phenotype(s) over time. Change in the way
members of population(s) appear.
- Adaptation - Fits to the environment.
- Natural Selection Differentiation in fitness.
- Fitness Survival and reproduction (whether direct or indirect). Measures
how well one group does against another group.
- Change in the relative frequency of genes within the gene pool.
- Some changes are non-adaptive- geno-typically and/or phenotypically.
- Transmission typically occurs through direct means like reproduction.
- … change over time.
- Length of time ensued is typically measured through:
Fossil record
Comparative anatomy
Direct Observation “microevolution”
- All have a similar origin
Unity through diversity.
- Some differences are adaptations:
Adaptive radiation
Convergent Design Artificial Design.
- The lack of genetic mutation would result in the lack of natural selection.
- Creation of new species.
- Graphical diagram.
- Cladistics diagram.
Human Examples
- Lactase Persistence: Milk Drinking
- Vitamin D: Skin Pigmentation
- Iodine Deficiency: Cognitive Impairment
All of the above involve tradeoffs and constraints.
Unlock document

This preview shows page 1 of the document.
Unlock all 3 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
$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.