Acting selfish? Blame your mother

Sep 02, 2010
Genes from our parents battle it out, telling us to be kind or telling us to be selfish

(PhysOrg.com) -- The fact that our female ancestors dispersed more than our male ancestors can lead to conflicts within the brain that influence our social behaviour, new research reveals.

Scientists from Oxford University and the University of Tennessee, Knoxville, examined the impact that genes ‘knowing’ which parent they come from - a process called ‘genomic imprinting’ - has on how selfish or altruistic they want their carriers to be.

A report of their research is published in the journal Evolution.

They found that because, historically, women moved about more than men, and so are less related to their neighbours, our paternal and maternal genes are in conflict over how we should behave - with our paternal genes encouraging us to be altruistic whilst our maternal genes encourage us to be selfish.

‘When women disperse more during their lifetime than men, as seems to be the case for ancestral humans, this leads to you being more related to your neighbours through your father than through your mother,’ said Dr Andy Gardner of Oxford University’s Department of Zoology, an author of the report.

‘This leads to conflicts over : the genes you receive from your father are telling you to be kind to your neighbours, whereas the genes you receive from your mother, like a demon sat on your shoulder, try to make you act selfishly.’

Mutations in imprinted genes have previously been linked to growth disorders in infants and, more recently, it has been suggested that they could underpin neurological disorders such as autism and psychosis. This study reveals how such disorders of the social brain can evolve by mutations favouring the expression of paternal genes (favouring ) or maternal genes (favouring selfishness).

Dr Gardner said: ‘What our research reveals is that the popular idea of someone battling their psychological ‘demons’, that are telling them to behave in a way, has some basis in our - we are all coalitions of conflicting genes.'

Explore further: Rock-paper-scissors model helps researchers demonstrate benefits of high mutation rates

More information: Paper online: onlinelibrary.wiley.com/doi/10.1111/j.1558-5646.2010.01015.x/abstract

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User comments : 6

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gmurphy
5 / 5 (2) Sep 02, 2010
Ohhh, I can just feel the vitrol brewing, time to take cover behind some sturdy boulders until this one blows over :-D
bottomlesssoul
1 / 5 (2) Sep 02, 2010
Where is the experimental data? Charts? Graphs? Multiple observations?

This sounds like an economics essay.
joedonbaker
not rated yet Sep 02, 2010
If you had bothered to follow the link and read the study in the Journal of Evolution, you would have found all sorts of data, charts, graphs, etc.
xznofile
1 / 5 (2) Sep 03, 2010
ok, but what if you have an altruistic mother & a selfish father? perhaps the associated genes are just there by chance, or some other reason, & really have nothing to do with those behavior traits at all.
Quarl
not rated yet Sep 03, 2010
Umm, in the old days, weren't women traded from one village/city-state to another? The man had the land while the woman made kids? (Preferably boy kids?) So if the woman was there primarily for use as a toy or a construction facility for boys, wouldn't she be less inclined to be altruistic and more inclined to get as much as she could? Just wondering...
Nina2
not rated yet Sep 04, 2010
Do we have to blame everything on mom?

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