Twins Data Reshaping Nature Versus Nurture Debate
An image from January's National Geographic Magazine cover story on twins. The story's author explains how scientists are expanding the field of epigenetics with research on twins.
For more images from the twins story: The Photographic Fascination With Twins
Almost 150 years ago, English scientist Francis Galton coined the phrase "nature versus nurture" — and proposed that research on twins could resolve the debate.
Genetics have long seemed to weigh heavily in favor of the role of nature in shaping the people we become. But even identical twins are different to varying degrees, and some researchers believe those differences suggest a third influence at work, called epigenetics.
Peter Miller of National Geographic Magazine wrote the magazine's January cover story, "A Thing or Two About Twins." Miller explains how scientists are expanding the field of epigenetics with research on twins.
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