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An Infidelity Gene?

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Kylie Fultineer

on 2 April 2015

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Transcript of An Infidelity Gene?

Discussion
Why do you think the findings were only applicable to men?

Article Citation
Walum, H., et al. "Genetic variation in the vasopressin receptor 1a gene
(AVPR1A) associates with pair-bonding behavior
in humans."
PNAS
105. 37 (2008): 14153-14156. The National Academy of Sciences of the USA. Web. 30 March 2015.
The End
The Study
"Genetic variation in the vasopressin receptor 1a gene
(AVPR1A) associates with pair-bonding behavior
in humans"
Results
Association found between RS3 polymorphism and the outcome of the PBS assessment for men
Where does the idea of an infidelity gene stem from?
Recent studies into pair bonding behavior and the development of a primate's social brain
An Infidelity Gene?
Materials and Methods
The data was collected from the Twin and Offspring Study in Sweden, which included 552 pairs of same-sex twins and their partners.
Concurrent and Future Research
http://www.bodyspacesociety.eu/2011/02/17/bums-bridges-and-primates-some-elements-for-a-sociology-of-online-interactions/
Study on pair bonding in voles
http://en.wikipedia.org/wiki/Vole
prairie voles
meadow voles
montane voles
purpose: to investigate the influence of AVP on monogamous or non-monogamous behavior
Can anyone define AVP, V1aR, and/or AVPR1A?
Results:
distribution of V1aR differs between species
428 base sequence on the AVPR1A gene in the prairie voles that is not found in the other species
when this sequence is implanted into the AVPR1A gene of the other two vole species, social behavior changes to be more similar to prairie voles
Goal: The purpose of this study was to explore the possibility of AVPR1A gene polymorphisms having an effect on human pair bonding behavior.
Are you aware of what a pair bonding relationship involves?
http://regiszoula.blogspot.com/2010/06/rocky-relationships-hurt-men-more-than.html
pair bonding relationship:
partner bonding
marital status
marital problems
marital quality
What type of study does this remind you of?
http://www.grg.org/Centenarians.html
DNA was collected via a mouthwash sample and questionnaires were utilized alongside a home visit to assess relationships
Partner Bonding Scale (PBS):
includes 49 questions intended to measure the features of pair bonds between the partners in this study
developed by combining methods used to determine pair bonding in primates with questions from various human relationship assessments
What do you recall being the benefits and drawbacks of twin studies?
3 repeat polymorphisms assessed for association
RS1
RS3
GT25
PBS scores shown to be lower in men with allele 334 than in men without
Did the number of allele 334s have an additional effect on PBS scored?
tested using measures other than PBS
marital quality in the opinion of wives associated with RS3 genotype of husband
In the study with voles, vasopressin was shown to have more influence on the behavior of males than of females.
The results suggest an association between an AVPR1A polymorphism and pair-bonding in humans.
Recent studies have shown an association between 334 allele and increased amygdala functioning
http://www.memorylossonline.com/glossary/amygdala.html
possible involvement in social deficiency disorders?
studies suggest the 334 allele may over-transmitted in patients with autism
http://nwmoautismalliance.org
more research needs to be done into the functional importance of the RS3 genotype of the AVPR1A gene
What are some possible sources of error you noticed in this study?
study only looked at married and/or co-inhabiting couples
assessments should be more objective than questionnaire style
What was the purpose of using a twin study for this investigation?
The twin study design allowed the researchers to estimate heritability of pair-bonding behavior and compare MZ twins to DZ twins. For male twins, the correlation for MZ twins was 0.27 and for DZ twins was 0.03.
http://thewritepractice.com/great-ending/
By: Kylie Fultineer
Full transcript