The friends are chosen according to the genes

The genes influence the election of the friends, as an investigation discovered in EEEUU.

The scientists of the University of California, San Diego, those who used information of two independent investigations, discovered that the persons who possess a gene associated with the alcoholism tend to create ties and those that carry a gene responsible for the metabolism tend to remain separated.

The study published in Proceedings of the National Academy of Sciences (PNAS) (Minutes of the National Academy of Sciences), Adolescent analyzed the records of the Study Framingham of the Heart and the National Longitudinal Study of Health.


Both studies, which are carried out in the USA for several decades, contain both genetic information and information about the friends of the participants.

The investigators concentrated on six genes specifically.

With one of these, called DRD2, that has been linked to the alcoholism, several groups of friends found with the same genetic scoreboard.

And with the gene CYP2A6, which is suspected it plays a role in the metabolism of foreign substances as the nicotine, it was discovered that the persons who have it tend not to approach between yes.

The scientists do not know what the cause of that is, but they speculate about that it might be a mechanism of defense of the organism.

According to the teacher James Fowler, who directed the study, genetic similar bosses have been between partners.

And also in individuals who avoid to have a potential relation with capable persons to the same illnesses.

The gene CYP2A6 also has been linked to the opening of an individual to new ideas and situations.

In the investigation, the scientists took in account several factors as race, common ancestry and genre, and nevertheless they obtained the same results.

Nevertheless, they agree in that the results present several qualification.

For example, says the teacher Fowler, which possess the gene DRD2 and are desirable to consume alcohol perhaps have found the majority of his friends in a bar and that might explain the genetic tie.

Neither a firm relation managed to find between genes and friends with others four genetic analyzed scoreboards.

BBC.


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