Word: vasopressin
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Dates: during 2010-2019
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...talk about the ones who don't. You say that one gene in particular - which scientists first started studying in voles - may play a role in infidelity. It's called the vasopressin receptor gene. The prairie vole, which is monogamous, bonds with one female for life, even if he's presented with other, fertile females. His cousin, the montane vole, is kind of a hit-and-run guy. He doesn't stick around at all. Scientists found that the montane vole had a short version of the vasopressin receptor gene, and the monogamous one had a long version...
...humans they have identified, so far, about 17 different lengths of [the vasopressin receptor gene]. There are several studies that have shown that those males with the longer version are more likely to be married, and their wives are more likely to say they have a happy, successful marriage and there hasn't been any infidelity. The ones with the shorter ones are more likely to be bachelors...