Oct 16, 2013 1:57 PM by NBC News
Scientists have linked a single gene mutation to a person's ability to emotionally handle both the good and bad times in a marriage.
The gene in question affects serotonin, a chemical in the brain that affects mood and well-being.
The study of 125 spouses found men and women with a particular variation of this gene were more likely to be affected by positive and negative emotions in marriage.
These genetic influences became stronger with age.
Experts say genes only have a very small affect on marriage and can't help predict the success of your upcoming nuptials.
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