I still have some confusion about "hereditary". If a person has a diease
that his great grandparents had, but not his parents or grandparents,
then is it still "hereditary", even though the person is not inheriting
it directly from his parents? Or would that be called "genetic"?
Sorry, if my question is not clear. I am not able to think clearly.
Part of my confusion arises from thinking about the word "inherited"
or "inheritance" in the context of wealth/property.
In case of wealth, a person inherits it from his/her
parents, although it is conceivable in some cases that he/she
got the wealth directly from the grandparents. But in case of a
disease, it may somehow not effect the intermediate generations.