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Readers question the biology of alcoholism and more

Your letters and comments on the September 3, 2016, issue of Science News

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4:36pm, October 19, 2016

Gene and tonic

Lab rats bred to drink a lot or hardly at all have revealed 930 genes linked to a preference for alcohol, a recent study shows. Tina Hesman Saey reported the findings in “Rats offer DNA clues to a­lcoholism” (SN: 9/3/16, p. 8).

John M. Wozniak Jr. wondered if the drinking rats were truly alcoholic, or if they gained nutritional or energy b­enefits from the alcohol.

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