NOVA scienceNOW

Epigenetics

Clip | 13m 25s  | Video has closed captioning.

Our lifestyles and environment can change the way our genes are expressed.

Aired: 07/01/07

Rating: TV-G

Problems Playing Video? | Closed Captioning

Funding for NOVA ScienceNOW is provided by the National Science Foundation and the Alfred P. Sloan Foundation.

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