Exactly. Humans breed for more diverse immunity to increase our chances of survi... | Hacker News

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seanp2k2 on Feb 8, 2017 | parent | context | favorite | on: CIA Declassified Coldwar Russian Jokes [pdf]

Exactly. Humans breed for more diverse immunity to increase our chances of survival.

jimmyk on Feb 8, 2017 [–]

Is that the only factor that influences who we breed with? If so, why do humans display a strong preference for mating within their own ethnic group?

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