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What role does genetics play in lifespan? Ask USA TODAY

Science reporter Dan Vergano answers this reader question. Have a question of your own? Send it using #askusatoday on Twitter, or e-mail askusatoday@usatoday.com. We'll try to answer it.

http://www.13wmaz.com/video/2319568081001/1/What-role-does-genetics-play-in-lifespan-Ask-USA-TODAY http://www.gannett-cdn.com/media/USATODAY/USATODAY/2013/04/22/a03_nl_old_folks_17_small.jpg What role does genetics play in lifespan? Ask USA TODAY Science reporter Dan Vergano answers this reader question. Have a question of your own? Send it using #askusatoday on Twitter, or e-mail askusatoday@usatoday.com. We'll try to answer it. Editorial pagegenesnationalcommongroundNewsAsk USA TODAYsciencegeneticsWMAZCommon Groundopinionlifespanlongevity 01:11

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