Explain the difference between ion channels and G proteins as they relate to signal transduction and targets of medications

Explain the difference between ion channels and G proteins as they relate to signal transduction and targets of medications.
How would you answer the following patient question:
My grandmother has a mental illness. I have the same genes as her. Will I also get the same mental illness?
Note: Your response needs to be supported and validated by three (3) scholarly peer-reviewed resources located outside of your course Learning Resources.