How Genes Pick Our Mates for Us

When picking a husband or wife, American couples seek out new immune genes, while Africans stick to the ones they've got. New research shows that American couples of European ancestry go for mates with versions of immune genes that recognise pathogens dissimilar from those their own genes recognise. These genes are part of the major histocompatibility complex, and the more MHC genes a person has, the greater variety of pathogens his or her immune system recognises. Previous work in fish,...Full Story
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