Those bad-boy genes: all they want us to do is get our end away so that they can reproduce alongside another set of DNA and live forever. Ok, so it sounds like the script for a bad, Sci-fi B movie involving bad blue screen graphics and a Swedish cast, but can genes really dictate our predilectations, even for cheating?
According to a recent series of investigations into the sex and social lives of sebra finches, male finches that show signs of fidelity towards a female - i.e., co-working to build a nest - also cheat in order to reproduce.
The genes responsible for this behaviour, which in evolutionary terms benefit both male and female birds (but more males to some extent), can also be passed down to the female offspring of the birds, the Huffington Post reveals.
'When [Wolfgang] Forstmeier's team conducted paternity tests on each bird, things got even more interesting. They found that male finches with a penchant for 'cheating' had daughters with a proclivity for infidelity as well, suggesting that female songbirds may inherit what the scientists deemed a 'Casanova gene' from their fathers.'
'This study suggests that even though 'unfaithful' behavior is risky for female birds, infidelity persists in both sexes because the biological advantages for the female finch's father and male offspring outweigh any disadvantages for the female herself.'
So what about us humans?
Justin Garcia, 'an evolutionary biologist at Binghamton University, found that individuals with a certain variation of a gene responsible for dopamine receptors were more likely to participate in uncommitted sex, including infidelity.'
Blame it on the genes if you're found in bed with another person: who can prevent genetic destiny from occuring?