Neither of my parents are diabetics. None of my parent's 4 children are diabetics. However,  my son and my sister's daughter both developed type 1 diabetes when they were 19 years old. 2 of my parent's 5 grandchildren are type 1 diabetics. The other 3 grandchildren are young enough that they are still likely to become type 1 diabetics.

   Until my son developed diabetes, I never imagined that I had type 1 diabetes genes. I knew that I have an uncle who is a type 1 diabetic, but I mistakenly thought I had not inherited any diabetic genes.

  I can remember learning Mendel's Law in high school. It seems like predicting the risk of type 1 diabetes is not as simple as predicting the chance of a flower seed producing a particular color of flower. My sister recently contacted distant relatives on my father's side of our family, and it seems like the incidence of type 1 diabetes does not decrease when the decendants of a type 1 diabetic breed for many generations with people who do not have any previous family history of type 1 diabetes. I have a daughter and I am wondering if she or her  non diabetic cousins will develop type 1 diabetes. When they are old enough to have children, and if they do not have type 1 diabetes, they may want to know if any children they may have will likely become type 1 diabetics.

  Does anyone know if it is possible to do DNA analysis which can accurately predict the chance of a person having a child who will get type 1 diabetes?