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b'(repeat) Heredity was once thought to be straightforward.\\xa0Genes were passed in an immutable path from parents to you, and you were stuck \\u2013 or blessed \\u2013 with what you got.\\xa0DNA didn\\u2019t change.\\xa0\\nBut now we know that\\u2019s not true.\\xa0\\xa0Epigenetic factors, such as your environment and your lifestyle, control how your genes are expressed.\\xa0Meanwhile, the powerful tool CRISPR allows us to tinker with the genes themselves.\\xa0DNA is no longer destiny.\\nHear the results from the NASA twin study and what happened to astronaut Scott Kelly\\u2019s DNA after a year on the International Space Station.\\xa0Plus, whether there\\u2019s evidence that epigenetic changes can be passed down.\\xa0And, if we can wipe out deadly malaria by engineering the mosquito genome for sterility, should we do it?\\nGuests:\\n\\n\\nScott Kelly\\xa0\\u2013\\xa0Former military test pilot and astronaut and author of \\u201cInfinite Wonder\\u201d\\n\\n\\nCarl Zimmer\\xa0\\u2013\\xa0Columnist for\\xa0The New York Times,\\xa0author of \\u201cShe Has Her Mother\\u2019s Laugh: The Powers, Perversions, and Potential of Heredity"\\n\\n\\n Christopher Mason\\xa0\\u2013\\xa0Associate professor of genetics and computational biology at Weill Cornell Medicine\\n\\n\\nMichael Snyder\\xa0\\u2013\\xa0Chair of the genetics department and director of the Center for Genomics and Precision Medicine at Stanford University\\n\\n\\nNicole Gladish\\xa0\\u2013\\xa0PhD candidate, department of medical genetics, University of British Columbia\\n\\n\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'