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Using DNA 'fingerprinting' to understand ancestry and immunity of trees

Author: Brandi Klingerman

American chestnut nuts with burrs and leaves

When Europeans came to the New World in the 16th century, they brought measles and smallpox with them. Without the immunity Europeans had cultivated over the years, the native people in America quickly fell ill. Millions died as a result. Today, trees in the New World are also dying from diseases that were introduced through global trade started by the Europeans. However, trees are much more vulnerable than humans.

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