Not genetic. Learned.
Like father, like son, only the son was a child when the father died?
Another instance: Multiple men, brothers, too close in age to “learn” bipolar schizo behavior from each other. A genealogy search shows individuals from former generations in mental hospitals.
So why let these men marry and procreate? Because in this family the first signs manifest well into adulthood.
You haven’t seen what I’ve seen, or you wouldn’t be so dismissive.
No, AxisI and AxisII diagnoses have a strong genetic component. Twin studies.