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Exploring Epigenetics: Generational Influence of Stress on DNA

Join us for an engaging discussion on epigenetics, focusing on how information is transmitted across generations. This lecture will cover the fascinating concept that while eye and liver cells share the same DNA, some of it remains inactive, influencing how traits are expressed. We'll explore how DNA methylation occurs and how it can be inherited. An intriguing example from Arabidopsis will illustrate how the offspring of stressed mothers adapt to similar stressors, reflecting changes in their genetic expression. Meet for an extra credit trip at Whatcom Falls Park!

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Exploring Epigenetics: Generational Influence of Stress on DNA

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Presentation Transcript

  1. Next time… • Monday – final! • Wednesday – extra credit trip! • Meet 15 minutes after class start • At the fish-hatchery parking lot in Whatcom Falls Park http://maps.google.com/maps/ms?msid=201491510676723487725.0004b2f839043211b4b92&msa=0&ll=48.751213,-122.428773&spn=0.000966,0.001644

  2. Epigenetics • One more note on how information is passed between generations • An eye cell has the same DNA as a liver cell • Some DNA in each cell is packed away, not expressed

  3. Epigenetics • DNA can be partially packed away too • The cell does this by methylating the DNA • Adding CH3 groups • This methylation of DNA can be passed between generations

  4. Epigenetics • Example: • Arabidopsis • Stressed mother produced offspring who responded to stress for several generations even though they were ok

  5. Epigenetics • http://www.pbs.org/wgbh/nova/body/epigenetics.html

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