Bring on the bug zappers. Mosquitoes that develop an insensitivity to the popular bug repellent DEET can pass that genetic trait on to their offspring, new research shows. DEET, a chemical found in most bug sprays, repels mosquitoes by mimicking plant chemicals. When female mosquitoes go out looking for blood—which they need to fertilize their eggs—they're not interested in plants. So a DEET-coated human doesn't smell like a tasty snack, according to study co-author James Logan. (source: news.nationalgeographic.com)
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