Sunday, 31 May, 2009 Offbeat

Dissemblances In The Opposite Gender Attract Us More, Genetics Says

Brazilian scientists discovered the genetic mechanisms of a partner's selection. According to Professor Maria da Graca Bicalho, from the Laboratory of Immunogenetics and Histocompatibility in the University of Parana (Brazil), people with different Major Complexes of Histocompatibility (MCH) get along more often than people with similar MCH.

The Brazilian staff of researchers has worked in this domain since 1998 and discovered a similar mechanism of selection in many vertebrates, relating it to the smell of the body.

They have gathered the data from 90 couples and compared them with the data of 152 couples from the control group, in order to count the number of differences in MCH.

It is the hereditary dissemblance of the partner that forms the couples, because it lowers the risk of endogamy (marriages between relatives) and increases the genetic variability of the next generations.

Genetic variability is an advantage for the generations to come, since it increases the effectiveness of the immune system.

According to the researchers, MCH is a massive genetic area, situated on the sixth chromosome of the majority of vertebrates, which is important for the reproductive function and for the immune system.

More than that, the study revealed that, in couples with similar MCH, the probability of having problems with baby conception is higher.

Thus, scientists confirmed the role of genetics in the attraction of opposite genders, which is vital for the birth of healthy generations.

Posted by summer_rain

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