Genetics (National Geographic Investigates)
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Genetics is the study of the unique DNA code that identifies a specific individual, whether it be a human, a plant, an animal, or even a microbe. Researchers are focused on the DNA of roundworms, trying to learn the secret of long life. Other scientists know that sunflowers can draw up pollution through their roots. Could the DNA of other plants be programmed so that they have the same capability? Game wardens use DNA to track poachers, law enforcement uses it to identify criminals, and archaeologists use it to learn from ancient nummies. A fascinating field of science, genetics seems to offer us a world of possibilities for the future, but those same possibilities can sometimes create ethical dilemmas.