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