Prehistoric Humans Rarely Mated With Their Cousins

Prehistoric Humans Rarely Mated With Their Cousins
AP Photo/Madrid Scientific Films, Kennis & Kennis

At present-day, more than ten percent of all global marriages occur among first or second cousins. While cousin-marriages are common practice in some societies, unions between close relatives are discouraged in others. In a new study, researchers from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and the University of Chicago investigated how common close parental relatedness was in our ancestors.

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