These two articles talk about scientific investigations that have started to show that what happens in one generation can affect the genetic makeup of the next. Specifically, the first article showed that a specific gene was altered in the children of Jewish Holocaust victims compared to children of Jews who did not experience the Holocaust. If this kind of linkage proves out, it will be one huge reason why the Bible teaches that God is very interested that the home be preserved intact. Breaking up a home is traumatic for children. Our society does not think about how its actions and lifestyles affect its children. Then we expect the children to do better and better on tests regardless of what is happening at home. It doesn’t work that way. A stable, loving and supportive home environment is the beginning and continuing foundation of a good education. It may prove to also be related genetically to the mental health of the next generation.
http://discovermagazine.com/2013/may/13-grandmas-experiences-leave-epigenetic-mark-on-your-genes