In search for mate, opposites attract

LONDON: When it comes to choosing a mate, opposites really do attract, according to a Brazilian study that found people are subconsciously more likely to choose a partner whose genetic make-up is different to their own.

They found evidence that married couples are more likely to have genetic differences in a DNA region governing the immune system than were randomly matched pairs.

This was likely to be an evolutionary strategy to ensure healthy reproduction because genetic variability is an advantage for offspring, Maria da Graca Bicalho and her colleagues at the University of Parana in Brazil reported.