Considering people who suffer from diabetes can have issues and need help with circumventing the difficulties this disease can pose for them, it's very possible that other people (who are part of the support structure/inner social group of the person who's suffering from it) would need to help him or her with his diabetes issues.
This answer explains how other people might be affected by someone having diabetes in their particular social group. I hope this was what you were interested in, your question seemed to ask this.
Answer:
Scientists did not know how traits were inherited
Explanation:
Scientist before did not know how the trait is passed on not until Griffith's experiment.
Answer:
Stem Cells
Explanation:
Stem cells are unspecified or undifferentiated meaning they can turn into any type of cell