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Study: Fathers may pass down more than just genes

from The New York Times

Scientists were investigating a tantalizing but controversial hypothesis: that a man's experiences can alter his sperm, and that those changes in turn may alter his children. That idea runs counter to standard thinking about heredity: that parents pass down only genes to their children. People inherit genes that predispose them to obesity, or stress, or cancer — or they don't. Whether one's parents actually were obese or continually anxious doesn't rewrite those genes. more


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