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Genetic Basis of Racism and Human Migration

This text explores the genetic aspect of racism and human migration, including the use of non-coding DNA for comparisons, mutations, and the estimation of the last common ancestor. It also discusses two hypotheses regarding the origin of Homo sapiens and the correlation between genetic and geographic distance.

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Genetic Basis of Racism and Human Migration

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  1. Exam #1 F 2/12Q&A Th 2/11from 5-7pmin PAI 3.02 Is racism genetic?

  2. When did these migrations take place?

  3. Non-Coding DNA is used for comparisons between individuals

  4. As DNA is passed on mutations take place Fig 1 and 4

  5. By determining the average time between mutations, we can estimate the time of the last common ancestor. 1 difference in DNA nucleotides = a common ancestor ~10,000 years ago. Fig 4

  6. Relationships of different populations using mtDNA ~150,000ya 7 Daughters of Eve, fig. 1

  7. Two hypotheses about the origin of H. sapiens X Multiregional hypothesis “Out of Africa” hypothesis

  8. Relationships of different populations using mtDNA... Shows a correlation between geographic and genetic distance ~150,000ya 7 Daughters of Eve, fig. 1

  9. Relationships of different people using mtDNA. 7 Daughters of Eve, fig. 2

  10. Relationships of different people using mtDNA. 7 Daughters of Eve, fig. 2

  11. Relationships of different people using mtDNA. 7 Daughters of Eve, fig. 2

  12. The data by individual show that people have been constantly migrating and moving?

  13. “Man’s Most Dangerous Myth: the Fallacy of Race” by Ashley Montagu (1942)

  14. Input to brain is filtered. What are you paying attention to?

  15. Are humans better at detecting certain threats vs non-threatening objects?

  16. Emotion Drives Attention: Detecting the Snake in the Grass Journal of Experimental Psychology: General 2001, Vol. 130, No. 3, 466-478 Arne Ohman, Anders Flykt, and Francisco Esteves

  17. Ability to detect snake or spider versus flower or mushroomby grid position Fig 1. Emotion Drives Attention: Detecting the Snake in the Grass (2001) J. of Ex. Psy., Vol. 130, No. 3, 466-478

  18. Ability to detect snake or spider versus flower or mushroomby grid position Fig 1. Emotion Drives Attention: Detecting the Snake in the Grass (2001) J. of Ex. Psy., Vol. 130, No. 3, 466-478

  19. Ability to detect snake or spider versus flower or mushroom is relatively quicker in a larger grid Fig 2. Emotion Drives Attention: Detecting the Snake in the Grass (2001) J. of Ex. Psy., Vol. 130, No. 3, 466-478

  20. The Role of Social Groups in the Persistence of Learned Fear (2005) SCIENCE 309 pg 785 Andreas Olsson, Jeffrey P. Ebert, Mahzarin R. Banaji, Elizabeth A. Phelpshttp://www.sciencemag.org/cgi/content/full/309/5735/785 This perspective accompanies the article and has some useful background and further discussion:http://www.sciencemag.org/cgi/content/full/309/5735/711

  21. Conditioned fear: snakes/spiders Fig 1. The Role of Social Groups in the Persistence of Learned Fear (2005) SCIENCE 309 pg 785

  22. Conditioned fear: race Fig 1. The Role of Social Groups in the Persistence of Learned Fear (2005) SCIENCE 309 pg 785

  23. Conditioned fear: snakes/spiders race Fig 1. The Role of Social Groups in the Persistence of Learned Fear (2005) SCIENCE 309 pg 785

  24. Is Race Necessarily a Defining Characteristic? Can race be erased? Coalitional computation and social categorization (December 18, 2001) PNAS vol. 98 no. 26 pg 15387–15392 Robert Kurzban, John Tooby, and Leda Cosmideshttp://www.pnas.org/cgi/content/full/98/26/15387

  25. Random Statements My birthday is in April. My birthday is in June. My birthday is in August. My birthday is in January. My birthdayis in February. My birthday is in July. My birthday is in October. My birthday is in May. Can race be erased? Coalitional computation and social categorization (December 18, 2001) PNAS vol. 98 no. 26 pg 15387–15392

  26. Coalition Membership I like orange. Hook em’. I like to wear overalls. Gig em’. Go Aggies. I like to wear chaps. I like Maroon. Go Horns. Can race be erased? Coalitional computation and social categorization (December 18, 2001) PNAS vol. 98 no. 26 pg 15387–15392

  27. When alternate coalition membership information is introduced, race is ignored. I like orange. Hook em’. I like to wear overalls. Gig em’. I like to wear chaps. I like Maroon. Go Aggies. Go Horns.

  28. Despite a lifetime's experience of race as a predictor of social alliance, less than 4 min of exposure to an alternate social world was enough to deflate the tendency to categorize by race. These results suggest that racism may be a volatile and eradicable construct that persists only so long as it is actively maintained through being linked to parallel systems of social alliance. Can race be erased? Coalitional computation and social categorization (December 18, 2001) PNAS vol. 98 no. 26 pg 15387–15392

  29. Humans are highly skilled at grouping objects (like people). • How we group people is largely determined by our environment.

  30. Exam #1 F 2/12Q&A Th 2/11from 5-7pmin PAI 3.02 Is racism genetic?

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