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Traumatizing your DNA
Date:3/23/2011

Tel Aviv When the Human Genome Project ended a decade ago, scientists thought that they'd closed the lid on all that's to be known about our genes. But what they really did was open a Pandora's Box, says theoretical evolutionary biologist Prof. Eva Jablonka of Tel Aviv University's Cohn Institute for the History and Philosophy of Science and Ideas.

After sifting through hundreds of scientific studies concerned with epigenetics, Prof. Jablonka concludes that some of the effects of stress, cancer, and other chronic diseases we suffer from may be passed on to our offspring through deep and complicated underlying cellular mechanisms that we are just now beginning to understand.

Prof. Jablonka will discuss her findings at an epigenetics conference in North Carolina later this month.

The invisible threat

Epigenetic research suggests that the effects of stress and environmental pollution can be passed on to future generations without any obvious change or mutation in our DNA. The problem, Prof. Jablonka points out, is that we have no idea of the extent these effects will have on the human genome of the future.

"I am a story teller. I read a lot of information and develop theories about evolution. For the last 25 years, before it became a fad, I was interested in the transmission of information not dependent on DNA variations," Dr. Jablonka says. "Epigenetic inheritance is information about us that is not explicitly encoded in our genes. Two individuals may have identical genes, but the genes present very different characteristics. They can be genetically identical but different epigenetically."

In a 2009 paper for the Quarterly Review of Biology, Prof. Jablonka wrote about cellular epigenetic inheritance and explored some of the consequences of such inheritance for the study of evolution, also pointing to the importance of recognizing and understanding epigenetic inheritance for practical and theoreti
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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert  

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