Now that is interesting. That just reminds me, when I was in pump class, there was a person whose doctor was at a university med center. The researchers told him there that in families with a genetic link to diabetes that if a daughter is born and develops diabetes-the genetic link comes from the father. If a son is born and develops diabetes-the genetic link comes from the mother. I do not know how they came to this conclusion or even who did the research and it could be hearsay but I thought it was interesting.
But in my family. NO parentor grandparent had the disease. I have type 1 diabetes. All in my family have type 1. My brother has diabetes. My other brother does not have diabetes, His daughter does. My sister does not have diabetes. Her daughter does.
My mother did not work-was a housewife.
My father was a mortician.
My one brother who has diabetes was in the army but worked in an office his intire life. His wife was a teacher.
My other brother traveled the world with his family. His wife was a church organist. (He was in the service)
My sister is a nurse and her husband was a TV announcer.
I am unable to have children so can't help there.
I think that same question boggles scientists.