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Marital woes can often be attributed to men's genetic make-up, according to a study linking a common male gene to relationship problems.
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Swedish researchers said Tuesday what women have suspected all along: that marital woes can often be attributed to men's genetic make-up, according to a study linking a common male gene to relationship problems.
The gene variant, which is present in four of 10 Swedish men, can explain why some men are more prone to stormy relationships and bond less to their wives or girlfriends, a team of researchers at Stockholm's Karolinska Institute said.
"There are, of course, many reasons why a person might have relationship problems, but this is the first time that a specific gene variant has been associated with how men bond to their partners," Hasse Walum, one of the researchers, said in a statement.
The team found that men who carry one or two copies of a variant of the gene often behave differently in relationships than men who lack the gene variant, called allele 334.
Men who had two copies of allele 334 were twice as likely to have had a marital or relationship crisis in the past year than those who lacked the gene variant, the statement said.
Their wives or girlfriends also noticed the difference.
"Women married to men who carry one or two copies of allele 334 were, on average, less satisfied with their relationship than women married to men who didn't carry this allele," Walum said.
The study surveyed 550 twins and their partners or spouses in Sweden.
Martin Ingvar, a professor of neurophysiology at Karolinska Institute, said the results were "very exciting."
"These are original findings which shed light on the fact that all of our behaviours are influenced by both nature and nurture. Even complex, cultural social phenomens such as marriage are influenced by a person's genetic make-up," Ingvar said.
The same gene has previously been linked to monogamous behaviour in male voles, a mouselike rodent.
The results of the study were published Tuesday in the US scientific journal Proceedings of the National Academy of Sciences (PNAS).
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(Agencies)
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婚姻不幸福？瑞典研究人員于本周二稱，這往往是男性的基因組成在“作怪”。一項(xiàng)有關(guān)男性攜帶的某種基因與婚姻問題的研究證實(shí)了女性一直以來的懷疑。
斯德哥爾摩卡羅林斯卡學(xué)院的一組研究人員稱，這種基因變體可以解釋為什么有些男性與伴侶的關(guān)系不穩(wěn)定、容易出軌。在10名瑞典男性中，有四人攜帶此種基因變體。
研究小組成員之一哈瑟?瓦盧姆在一份聲明中說：“當(dāng)然，婚姻出現(xiàn)問題可能有很多原因，但這是首次將某種特定的基因變體與男性對伴侶的忠貞度聯(lián)系在一起。”
研究小組發(fā)現(xiàn)，攜帶一個(gè)或兩個(gè)這種名為“334型等位基因變種”的男性與沒有這種基因變種的男性相比，對待婚姻或感情的態(tài)度有所不同。
聲明稱，攜帶兩個(gè)這種基因變種的男性在過去一年中出現(xiàn)婚姻或感情危機(jī)的幾率為不攜帶這種基因變種男性的兩倍。
他們的妻子或女友們也體會(huì)到了這種差別。
瓦盧姆說：“與不攜帶‘334型等位基因變種’男性的妻子相比，攜帶一個(gè)或兩個(gè)此種基因變體男性的妻子對婚姻的滿意度平均較低。”
該研究對瑞典550對雙胞胎及他們的伴侶或配偶進(jìn)行了調(diào)查。
卡羅林斯卡學(xué)院的神經(jīng)生理學(xué)教授馬丁?英格瓦說，研究結(jié)果十分“令人激動(dòng)”。
他說：“這些最新發(fā)現(xiàn)讓我們認(rèn)識到，人的所有行為都受到先天和后天兩大因素的雙重影響。即便是婚姻這種復(fù)雜的文化社會(huì)現(xiàn)象也受到人基因組成的影響。”
此前有研究發(fā)現(xiàn)，334型等位基因與雄性田鼠對配偶的忠貞度有關(guān)。
該研究結(jié)果于本周二在美國美國國家科學(xué)院院報(bào)上發(fā)表。
（英語點(diǎn)津姍姍編輯）
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