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Nurture Trumps Nature in Study of Oral Bacteria in Human Twins, University of Colorado Reveals


10/12/2012 7:42:42 AM

A new long-term study of human twins by University of Colorado Boulder researchers indicates the makeup of the population of bacteria bathing in their saliva is driven more by environmental factors than heritability. The study compares saliva samples from identical and fraternal twins to see how much “bacterial communities” in saliva vary from mouth to mouth at different points in time, said study leader and CU-Boulder Professor Kenneth Krauter. The twin studies show that the environment, rather than a person’s genetic background, is more important in determining the types of microbes that live in the mouth.


   

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