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Modern Human Variability - Coggle Diagram

- - - - Perhaps the first human to categorize humans systematically.
    - - Social Evolution
        
        Idea that cultures evolve like organisms, & this results in more "advanced" organisms.
    - - Cultural variablity = biologically determined.
    - - Belief in genetically superior & inferior groups = Eugenics.
    - - Incredibly low rate of genetic variability.
      - Impossible to categorize discrete human groups using genetic traits.
      - More genetic variability in people in the same region than people in different regions.
- - - - Bergmann's Rule: Connects external temperature & ratio of body surface to weight in warm-blooded animals.
      - Allen's Rule: Appendages of mammals in colder climates = shoter than appendages of mammals in hotter climates.
      - Adaptations = long - term trait selection & part of genetic code.
  - - - The change involved:
        
        Sedentism.
        
        Practicing agriculture.
        
        Living in larger groups.
      - New disease exposure:
        
        More people living in close proximity.
        
        Human waste.
        
        Food refuse.
        
        Dogs.
        
        Rats & mice.
        
        Insects (fleas, lice).
    - - HIV & AIDS
      - SIV
      - Bubonic Plague (& maybe smallpox, chicken pox, & dysentary).