Are you genetically

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Exam 1 F 2/13 Bonuses posted
Are you genetically programed to be racist?
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Fig 34.40
DNA is passed from generation to generation, and
therefore can tell us about relationships between
species.
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Fig 34.42
How are we related to our ancestors, and where
did we come from?
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Traits coded for by mtDNA are inherited only
through mother
mitochondria
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The mutation rate in human mtDNA is one
nucleotide change per 20,000 years. OR A
difference of one nucleotide between two people
indicates a common relative 10,000 years ago.
Fig 4
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Two hypotheses about the origin of H. sapiens
Multiregional hypothesis
Out of Africa hypothesis
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Relationships of different populations using mtDNA
150,000ya
7 Daughters of Eve, fig. 1
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Two hypotheses about the origin of H. sapiens
X
Multiregional hypothesis
Out of Africa hypothesis
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Relationships of different people using mtDNA.

• From Science v298 12/20/02 pg 2381
• 93-95 of genetic variation within population.
• 3-5 of genetic variation occurs between
  populations.

7 Daughters of Eve, fig. 2
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Mans Most Dangerous Myth the Fallacy of Race
by Ashley Montagu
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Mans Most Dangerous Myth the Fallacy of Race
by Ashley Montagufirst published in 1942
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There is no genetic definition of race.
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Humans have been constantly moving and migrating.
Any geographic location contains people with DNA
from many different other areas...
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Proposed model of human evolution/ migration
Additional migrations
Expansion from Asia to Africa
Out of Africa of Homo sapiens
Out of Africa
Fig 9
Out of Africa of Homo erectus
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Humans have been constantly moving and migrating.
Any geographic location contains people with DNA
from many different other areas...
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The nervous system allows us to perceive the
environment while the brain integrates the
incoming signals to determine an appropriate
response.
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Input to brain is filtered. What are you paying
attention to?
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Active seeking of infoversusSubconscious
scanning for threats
Are we evolutionarily adapted to detect certain
threats?
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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
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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
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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
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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
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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
discussionhttp//www.sciencemag.org/cgi/content/
full/309/5735/711
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Conditioned fear
snakes/spiders
Fig 1. The Role of Social Groups in the
Persistence of Learned Fear (2005) SCIENCE 309 pg
785
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Conditioned fear
race
Fig 1. The Role of Social Groups in the
Persistence of Learned Fear (2005) SCIENCE 309 pg
785
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Conditioned fear
snakes/spiders
race
Fig 1. The Role of Social Groups in the
Persistence of Learned Fear (2005) SCIENCE 309 pg
785
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Is Race Necessarily a Defining Characteristic?
Can race be erased? Coalitional computation and
social categorization (December 18, 2001) PNAS
vol. 98 no. 26 pg 1538715392 Robert Kurzban,
John Tooby, and Leda Cosmideshttp//www.pnas.org/
cgi/content/full/98/26/15387
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Random Statements
My birthday is in April.
My birthday is in June.
My birthday is in August.
My birthday is in January.
My birthday is in July.
My birthday is in October.
My birthday is in May.
My birthdayis in February.
Can race be erased? Coalitional computation and
social categorization (December 18, 2001) PNAS
vol. 98 no. 26 pg 1538715392
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Coalition Membership
I like orange.
Hook em.
I like to wear overalls.
Gig em.
Go Horns.
I like to wear chaps.
I like Maroon.
Go Aggies.
Can race be erased? Coalitional computation and
social categorization (December 18, 2001) PNAS
vol. 98 no. 26 pg 1538715392
33
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 Horns.
Go Aggies.
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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 1538715392