re: #107 wrenchwench

My degree has expired. And I ain’t going back to school…

Greatly simplified version:

If you were born in the 1950’s to parents who lived through the London Blitz, or the siege of Stalingrad, or years at Auscwisz… you’d be genetically distinct from siblings born before the war to those same parents. Significantly more distinct than the usual sibling differences. The trauma they endured altered their eggs and sperm sufficiently that these genetic differences are still measurable 3 generations later.