Is Disease "Inheritance" More Random than Once Thought?

This article from 2007 talked about new research that shows cells often deactivate a pair of gene copies from either the mom or the dad. This is really interesting because it helps explain why some children inherit diseases and disorders while some don't, which is what we have been working on and trying to learn this week. One example of an interesting thing that I learned is when these alterations happen it unfortunately helps Alzheimer's disease manifest itself. Cells inactivating alleles actually happens so often that it can be just as big if not more of a part in human diseases developing in individuals than DNA mutation, or at least than we previously believed. This research also stated that so far, no genes seem to be immune to this, which is pretty scary but when you think about it its not because this has been happening all along we just didn't know it was going on, this new information is just expanding our knowledge on cell activity and gene inheritance. I am taking away some knowledge from this and am going to apply it, at least by talking to my mom because she is into biology and probably didn't know this when she was in college. I don't think I can apply this in class because we have been working on how genes directly translate to the parents' offspring and most kids are already confused and adding a 5-10% chance (or something similar) to those sheets or those kids knowledge could just confuse the crap out of everybody, but I am glad that I have learned this knowledge and was intrigued by this article.