inheriting trauma... epigenetics... Context is everything

"The findings, the authors concluded, supported an “epigenetic explanation.” The idea is that trauma can leave a chemical mark on a person’s genes, which then is passed down to subsequent generations. The mark doesn’t directly damage the gene; there’s no mutation. Instead it alters the mechanism by which the gene is converted into functioning proteins, or expressed. The alteration isn’t genetic. It’s epigenetic."

Can We Really Inherit Trauma, Benedict Carey