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Read articles, including Science News stories written for ages 9-14, on the SNK website.
GENE EXCHANGE

This illustration depicts a hypothetical situation in which disease-causing bacteria (with spiky green coats) could acquire resistance to the antibiotic penicillin by exchanging DNA (red helical ribbon) with harmless bacteria living in the human gut (blue rounded chains). Penicillin (white and green balls) would have no effect on microbes with the penicillin resistance gene (spiky blue coat). Credit: Courtesy of A. Canossa, M. Sommer and G. Dantas

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