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GENETICS of BEHAVIOUR

FF Science Series #2
by

Danee Gm

on 25 November 2012

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Transcript of GENETICS of BEHAVIOUR

GENETICS of BEHAVIOUR by danee for the FF Science Series #2
nov 2012 BEHAVIOURAL GENETICS Sir Francis Galton mid 19th Century intellectual
cousin of Charles Darwin
studied heritability of HUMAN ABILITY
published HEREDITARY GENIUS
launched the Statistical Enlightenment
pioneered of Eugenics
inspired the Nazi "Final Solution" (unintentionally)

Recognised as the 1st Behavioural Geneticist 19th
C 1960 Publication of Behavior Genetics by JL Fuller gained recognition as a research discipline 1972 Establishment of Behavior Genetics Association Theodosius Dobzhansky as the 1st president
Drosophila: relationship between genotype x mating success
Honey bees: hygenic behaviour now Big interdisciplinary field of
biology, genetics, epigenetics, ethology, statistics, neurology, & psychology
lots of behavioural genetics specialists
lots of journals under this category So, WHAT IS IT? wiki says:
"the field of study that examines the role of genetics in animal (including human) behaviour" Simple? what is... BEHAVIOUR? determining the INHERITANCE of
BEHAVIOURAL TRAITS the range of actions
& mannerisms made by
organisms, systems, or
artificial entities x their
environment...
the response of the organism to various stimuli or
input, whether internal/external, conscious/
subconscious, overt/covert, voluntary/involuntary. mannerisms intelligence personality response tendencies shyness / assertiveness addiction speaking patterns physical skill preferences social conduct / demeanor attachment mental illness Nature vs Nurture are we all "blank slates"? tolerance Biological Basis of Behaviour known GENES (or heritability) & their corresponding TRAITS What's after identification? NO wide GENETIC SPECTRUM = variety of TENDENCIES PREDISPOSITIONS THRESHOLD for TOLERANCE note: this is not a plea for DETERMINISM Studies show: Behaviour often is species specific
Behaviours often breed true
Behaviours change in response to alterations in biological structures or processes
Some behaviours run in families
Behaviour has an evolutionary history that persists across related species We've always bred animals for behavioural traits! how are these studied? stats
twin studies
adoptee studies
imagine of brain activity
many more in comparison with genome info chromosomally related & single-gene traits are of course much easier to study! handedness
hand clasping habits
arm folding preference
ability to move ears
tongue curling, rolling, folding
musical perfect pitch stuttering
ability to smell certain
substances (eg asparagus)
novelty seeking personality
tobacco addiction
alcoholism
schizophrenia
homosexuality
discrimination* gullibility
familial/maternal attachment
learning from mistakes
non-verbal IQ
pain tolerance
many more! US$ 299 after harvesting info, what next? SOCIETY & CULTURE
had BRED ITS PEOPLE
to BE what it is TODAY acceptable & desirable traits get
passed on the the next generation What does the future look like? is it inevitable that our personal genome will be available to the public or to the government? pros
cons if we can screen for the 4$$h0l3 GENE: candidate for gene therapy?
screen for people who are
"genetically-behaviourally" suitable for
certain jobs of power
keep some people there for representation
but limit their rights? take away BIAS against certain traits insurance companies
HR evaluators
real estate
banks
...anyone who wants to know you! preparedness
acceptance
tolerance
better understanding of certain conditions ... it depends on who is in charge of this knowledge! dysfunction
disease
mental illness
abnormality
debilitating condition can't blame me! i'm
born this way THANKS!
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