You might scratch your head when you pass a beauty with a geek (or Paula Abdul with that cartoon cat), but genetics can help to explain the mismatched pairing.
A new study claims that people are subconsciously drawn to partners whose DNA is different from their own. Why? The diversification is most likely an evolutionary strategy; offspring tend to turn out better when there's a greater variety of DNA to choose from. In the case of a beauty and a geek, their kid would have a better chance of being hot and smart. (One can only imagine how cute Marilyn and Joe's children would have been!)
While scientists maintain that opposite genes are good for reproduction, untrained people have long claimed that two opposites can complement each other in a relationship. Everyone wins, for example, when one partner loves to cook, while the other one gets pleasure out of doing the dishes.
Are you attracted to your opposite? Have you ever been a Republican dating a Democrat, a slob dating a clean freak, a jock dating an unathletic partner, or an atheist dating a believer? Do certain "opposite" characteristics cross the line into deal-breaker territory?