(NEWSER– Scientists have been able to study the effects of inbreeding on plants and animals in detail; when it comes to humans, not so much. As Nature explains, there isn't exactly endless data on generation after generation of inbred families—with at least one notable exception. A new study published this month in Heredity looks at inbreeding in the Habsburg royal family, known for cousins (and uncles/nieces) who did far more than kiss. What the researchers assert: natural selection went to work to weed out the worst effects of the practice.

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