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For many of us, marriage is special. The idea of a lifelong bond between two people is accorded legal, spiritual and cultural significance throughout much of the world. Whether we are religious or secular, a permanent monogamous relationship can feel sacred.
 love fidelity marriage sex
Some people may be genetically programmed to be unfaithful to their partner, a scientist has claimed. ... Focusing on women, he found that if one of a pair of twins had a history of infidelity, the chances her sister would also stray were about 55%. In general it is estimated that just 23% of women are not faithful.

2004-06-07

 sex evolution attraction genetics love infidelity women fidelity
Infidelity may be natural according to studies that show nine out of 10 mamals and birds that mate for life are unfaithful. Experts found animals that fool around are only following the urges of biology. New studies using genetic testing techniques show that even the most apparently devoted of partners often go in search of the sexual company of strangers. Females stray to gather the best possible genes for their offspring, while males are...

1998-09-25

 sex evolution attraction love infidelity fidelity monogamy
A single gene can turn the Don Juan of voles into an attentive home-loving husband, Nature magazine has reported. By altering the small animal's brain hormone chemistry, scientists have made a promiscuous meadow vole faithful - just like its prairie vole cousin. The researchers think this will lead to a greater understanding of how social behaviour is controlled in humans...

2004-06-16

 sex marriage genetics love fidelity monogamy